| # | Name | File Type |
|---|---|---|
| 1 | C Opener | C/C++ Source Code Format |
| 2 | C# Opener | Microsoft Visual C# |
| 3 | C++ Opener | C++ Source Code |
| 4 | C-- Opener | Sphinx C-- Language Source Code |
| 5 | C-MAP Opener | C-map |
| 6 | C00 Opener | WinAce Split Archive Format |
| 7 | C000 Opener | Genie Backup Manager Compressed Split Backup Format |
| 8 | C01 Opener | WinAce Split Archive Part 1 Format |
| 9 | C02 Opener | WinAce Split Archive Part 1 Format |
| 10 | C03 Opener | Split Multi-volume ACE Compressed Format Archive |
| 11 | C04 Opener | Split Multi-volume ACE Compressed Format Archive |
| 12 | C05 Opener | Split Multi-volume ACE Compressed Format Archive |
| 13 | C06 Opener | Split Multi-volume ACE Compressed Format Archive |
| 14 | C07 Opener | Split Multi-volume ACE Compressed Format Archive |
| 15 | C08 Opener | Split Multi-volume ACE Compressed Format Archive |
| 16 | C09 Opener | Split Multi-volume ACE Compressed Format Archive |
| 17 | C1 Opener | Pov-Ray For Windows 3.x Scenes Advanced Newltpot |
| 18 | C10 Opener | WinAce Split Archive Part 10 |
| 19 | C11 Opener | CARE-S InfoWorks User Defined Pollutant Detail |
| 20 | C16 Opener | C16 Creatures 3/Docking Station Image |
| 21 | C18 Opener | Dassault Systemes Catia V4 Sequential |
| 22 | C1P Opener | Capture One Preview Data Format |
| 23 | C1S Opener | Photo Cache |
| 24 | C1W Opener | Capture One Work Data Format |
| 25 | C2 Opener | Pov-Ray For Windows 3.x Scenes Advanced Newltpot |
| 26 | C21 Opener | CARE-S InfoWorks Defined Pollutant Detail |
| 27 | C24 Opener | Drive Image Ace |
| 28 | C2C Opener | CopyToDVD Project |
| 29 | C2D Opener | WinOnCD Disc Image |
| 30 | C2E Opener | Chinese Dictionary Index |
| 31 | C2K Opener | Microsoft Project Holidays |
| 32 | C2R Opener | Windows Media Center Click-To-Record Format |
| 33 | C2U Opener | Texas Instruments CBL 2 OS Format |
| 34 | C2V Opener | WellSight Systems License Information |
| 35 | C2W Opener | WaterCAD |
| 36 | C2X Opener | WinOnCD |
| 37 | C3 Opener | Pov-Ray For Windows 3.1 Scenes Advanced Newltpot |
| 38 | C32 Opener | Syslinux COM32 Module |
| 39 | C39 Opener | Split Multi-volume ACE Compressed Format Archive |
| 40 | C3D Opener | Coordinate 3D Format |
| 41 | C3D1 Opener | Chem3D Cartesian 1 Chemical Modeller |
| 42 | C3D2 Opener | Chem3D Cartesian 2 Chemical Modeller |
| 43 | C3E Opener | CYPE Related |
| 44 | C3L Opener | CommView License Format |
| 45 | C3P Opener | XPanel Project Format |
| 46 | C3T Opener | Chemical Template |
| 47 | C3XML Opener | Chem3D XML Format |
| 48 | C3Z Opener | OpenQwaq 3D Model Format |
| 49 | C4 Opener | JEDMICS Image Format |
| 50 | C40 Opener | Split Multi-volume ACE Compressed Format Archive |
| 51 | C41 Opener | Split Multi-volume ACE Compressed Format Archive |
| 52 | C42 Opener | Split Multi-volume ACE Compressed Format Archive |
| 53 | C43 Opener | Split Multi-volume ACE Compressed Format Archive |
| 54 | C44 Opener | Split Multi-volume ACE Compressed Format Archive |
| 55 | C45 Opener | Split Multi-volume ACE Compressed Format Archive |
| 56 | C46 Opener | Split Multi-volume ACE Compressed Format Archive |
| 57 | C47 Opener | Split Multi-volume ACE Compressed Format Archive |
| 58 | C48 Opener | Split Multi-volume ACE Compressed Format Archive |
| 59 | C49 Opener | Split Multi-volume ACE Compressed Format Archive |
| 60 | C4B Opener | Clonk Data Format |
| 61 | C4D Opener | Cinema 4D Model Format |
| 62 | C4DUPDATE Opener | Cinema 4D Update |
| 63 | C4F Opener | Clonk Game Round |
| 64 | C4G Opener | Clonk Game System |
| 65 | C4I Opener | Clonk Object Format |
| 66 | C4K Opener | Clonk Key Format |
| 67 | C4L Opener | Clonk Data Format |
| 68 | C4M Opener | Clonk Game Data Format |
| 69 | C4P Opener | CrossOver Software Installer Format |
| 70 | C4S Opener | Clonk Game Scenario |
| 71 | C4U Opener | OpenClonk Update System |
| 72 | C4V Opener | Clonk Game Video |
| 73 | C50 Opener | Split Multi-volume ACE Compressed Format Archive |
| 74 | C51 Opener | Split Multi-volume ACE Compressed Format Archive |
| 75 | C52 Opener | Split Multi-volume ACE Compressed Format Archive |
| 76 | C53 Opener | Split Multi-volume ACE Compressed Format Archive |
| 77 | C54 Opener | Split Multi-volume ACE Compressed Format Archive |
| 78 | C55 Opener | Split Multi-volume ACE Compressed Format Archive |
| 79 | C6 Opener | Organic 2D/3D Drafting & 3D Modelling |
| 80 | C64 Opener | Commodore 64 ROM Image |
| 81 | C85 Opener | RISC OS JPEG Bitmap Image |
| 82 | CA Opener | Initial Telnet Cache |
| 83 | CA1 Opener | Delphi Install Disk |
| 84 | CA2 Opener | Delphi Install Disk12 |
| 85 | CA3 Opener | Casio WK-1800 Keyboard Audio Data Format |
| 86 | CA4 Opener | Delphi Installation |
| 87 | CA5 Opener | Delphi Installation |
| 88 | CAA Opener | CleanApp Archive |
| 89 | CAB Opener | Windows Cabinet Format |
| 90 | CABAL Opener | Haskell Cabal |
| 91 | CAC Opener | DBASE IV Executable |
| 92 | CACHE Opener | Cache Format |
| 93 | CACHE-2 Opener | VLC Media Player Font Cache |
| 94 | CACHE-3 Opener | VLC Media Player Font Cache |
| 95 | CACHE2 Opener | Pro/ENGINEER |
| 96 | CACHEDMSG Opener | Valve Steam Cache Format |
| 97 | CACHEDUMP Opener | Microsoft Windows System Data Format |
| 98 | CACHED_ICON Opener | HERE Maps For Android Icon Cache Format |
| 99 | CACTION Opener | Automator Converter Action |
| 100 | CAD Opener | BobCAD-CAM Format |
| 101 | CADC Opener | Corpatla Data Container Format |
| 102 | CADOC Opener | Clicker App Document Format |
| 103 | CADRG Opener | Compressed ARC Raster Graphic |
| 104 | CAE Opener | Abaqus CAE Model |
| 105 | CAF Opener | Core Audio Format |
| 106 | CAFF Opener | Core Audio Format |
| 107 | CAG Opener | ClipArt Gallery Package |
| 108 | CAH Opener | Ulead Photo Explorer Thumbnail Cache |
| 109 | CAI Opener | SeeYou Flight Data |
| 110 | CAJ Opener | China Academic Journals Full-text Database |
| 111 | CAKEWALKSTUDIOWARE Opener | Cakewalk Studioware Data Format |
| 112 | CAKEWALKWINDOWLAYOUT Opener | Cakewalk Window Layout |
| 113 | CAL Opener | 3ds Max Pose Adjustment Format |
| 114 | CALB Opener | Coolect Album Format |
| 115 | CALCA Opener | Calca Document Format |
| 116 | CALENDARLOCKS Opener | Apple Calendar Format |
| 117 | CALIB Opener | Chief Architect Library Format |
| 118 | CALIBRE Opener | Calibre Device Data Format |
| 119 | CALIBZ Opener | Chief Architect Symbol |
| 120 | CALIPERSKIN Opener | Screen Calipers Skin Format |
| 121 | CALS Opener | CALS Raster Graphic Format |
| 122 | CALX Opener | Calendar Printing Assistant Template |
| 123 | CAM Opener | Gerber CAM Job Format |
| 124 | CAM-FT Opener | CircuitCAM Footpring Data Format |
| 125 | CAM-GMC Opener | CircuitCAM Version 6.2 GMC Library Data Format |
| 126 | CAM-PKG Opener | CircuitCAM Design Package Format |
| 127 | CAMELSOUNDS Opener | Camel Audio Alchemy Sound Library Format |
| 128 | CAMERROR Opener | Camtasia Studio Error Log Format |
| 129 | CAMM Opener | Espresso Mind Map Document |
| 130 | CAMP Opener | WCS CAMP |
| 131 | CAMPROJ Opener | Camtasia Studio Project |
| 132 | CAMREC Opener | Camtasia Studio Screen Recording |
| 133 | CAMTHTR Opener | Camtasia Studio Theater |
| 134 | CAMV Opener | Camtasia Video Format |
| 135 | CAN Opener | Canon Navigator Fax Document |
| 136 | CANF Opener | CanOpener |
| 137 | CANIM Opener | Shank Game |
| 138 | CANNEDSEARCH Opener | Apple Mac OS X Finder Predefined Search |
| 139 | CAOS Opener | CanOpener Preference |
| 140 | CAP Opener | Packet Capture Format |
| 141 | CAPFILE Opener | Ruby Capistrano Instruction |
| 142 | CAPROJ Opener | Construct Project Format |
| 143 | CAPS Opener | CaptureSaver |
| 144 | CAPT Opener | Linrock Capito Data Format |
| 145 | CAPX Opener | Construct Compressed Project Format |
| 146 | CAPXML Opener | Capella XML Document Format |
| 147 | CAR Opener | Car Explorer Data Format |
| 148 | CARB Opener | Apple Mac OS X Carbon Package |
| 149 | CARC Opener | Nintendo DS Compressed Archive Format |
| 150 | CARD Opener | Funkiball Adventure |
| 151 | CARO Opener | Adobe Acrobat Creatorcode |
| 152 | CAS Opener | Autodesk AutoCAD License Format |
| 153 | CASCII Opener | CACTVS Chemical ASCII Format |
| 154 | CASE Opener | SlipCover Case Template |
| 155 | CASTEP Opener | CASTEP Data Format |
| 156 | CAT Opener | Microsoft Security Catalog Format |
| 157 | CAT4D Opener | Cinema 4D Catalog |
| 158 | CATALOG Opener | CATIA Catalog |
| 159 | CATANALYSIS Opener | CATIA Analysis |
| 160 | CATDRAWING Opener | CATIA Drawing |
| 161 | CATFCT Opener | CATIA CATfct |
| 162 | CATKNOWLEDGE Opener | CATIA CATKnowledge |
| 163 | CATMATERIAL Opener | CATIA CATMaterial |
| 164 | CATOM Opener | Chief Architect Catalogue |
| 165 | CATPART Opener | CATIA V5 Part Format |
| 166 | CATPREFERENCES Opener | CATIA Preferences |
| 167 | CATPROCESS Opener | CATIA Process |
| 168 | CATPRODUCT Opener | CATIA V5 Assembly Format |
| 169 | CATRASTER Opener | CATIA Raster |
| 170 | CATRESOURCE Opener | CATIA Resource |
| 171 | CATSCRIPT Opener | CATIA Script Format |
| 172 | CATSETTINGS Opener | CATIA Settings |
| 173 | CATSHAPE Opener | CATIA Shape |
| 174 | CATSWL Opener | CATIA CATSwl |
| 175 | CATSYSTEM Opener | CATIA Functional Systems |
| 176 | CATVBS Opener | CATIA Script Format |
| 177 | CAV Opener | Comodo Virus Definitions Format |
| 178 | CAVS Opener | Chinese AVS Video Format |
| 179 | CAWR Opener | Espresso Workreport Document |
| 180 | CAX Opener | VCollab 3D Model |
| 181 | CA_ Opener | Microsoft Cabinet Archive Format |
| 182 | CB Opener | Microsoft Clean Boot |
| 183 | CB1 Opener | CARE-S InfoWorks Biochemical Oxygen Detail |
| 184 | CB4 Opener | Actuate Analytics |
| 185 | CB7 Opener | Comic Book 7-Zip Archive |
| 186 | CBA Opener | Comic Book ACE Archive |
| 187 | CBB Opener | ChessBase Search Booster |
| 188 | CBC Opener | Comic Book Collection |
| 189 | CBCP Opener | CodeBaby Production Studio Character Package |
| 190 | CBD Opener | Corel WordPerfect Dictionary |
| 191 | CBDS Opener | Comic Book DS Format |
| 192 | CBF Opener | Calendar Builder Format |
| 193 | CBG Opener | ChessBase Game Moves Format |
| 194 | CBH Opener | ChessBase Database Header Format |
| 195 | CBK Opener | Backup Configuration Format |
| 196 | CBL Opener | COBOL Source Code Format |
| 197 | CBM Opener | Bitmap Image Format |
| 198 | CBMAP Opener | Containment Breach Map Format |
| 199 | CBMV Opener | Comic Book Millennium Collection |
| 200 | CBN Opener | PaperMaster Cabinet |
| 201 | CBO Opener | Microsoft Interactive Training |
| 202 | CBOARD Opener | Final Cut Pro Color Board Preset Format |
| 203 | CBP Opener | Code::Blocks Project Format |
| 204 | CBPLUGIN Opener | Code::Blocks Plugin |
| 205 | CBPROJ Opener | C++ Builder Project |
| 206 | CBQ Opener | StarOS Script |
| 207 | CBR Opener | Comic Book Archive Format Or ComicBook Reader Format |
| 208 | CBS Opener | Comodo Backup Script |
| 209 | CBT Opener | CDisplay TAR Comic Book Format |
| 210 | CBU Opener | Comodo Backup Format |
| 211 | CBV Opener | ChessBase Database Format |
| 212 | CBW Opener | ComicRack Webcomics |
| 213 | CBX Opener | Rational XDE |
| 214 | CBXML Opener | CodeBox XML Library |
| 215 | CBZ Opener | Comic Book Archive Format Or ComicBook Reader Format |
| 216 | CC Opener | C++ Source Code Format |
| 217 | CC1 Opener | Briggs Softworks Calendar Commander |
| 218 | CC2 Opener | Calendar Commander Calendar Data Format |
| 219 | CC3 Opener | CUEcards Data Format |
| 220 | CC4 Opener | Crossword Compiler Crossword Puzzle Format |
| 221 | CCA Opener | Multimedia Fusion Format |
| 222 | CCB Opener | Visual Basic Animated Button Configuration |
| 223 | CCBI Opener | CocosBuilder Data Format |
| 224 | CCBJS Opener | CopperCube JavaScript Scene |
| 225 | CCC Opener | Microsoft Internet Chat Conversation Log |
| 226 | CCD Opener | CloneCD Disc Image |
| 227 | CCE Opener | Calendar Creator 2 Event |
| 228 | CCF Opener | CryptLoad Container Format |
| 229 | CCFG Opener | BartPE Configuration Format |
| 230 | CCGAME Opener | XNA Creators Club Game Package |
| 231 | CCH Opener | Photomodeler Photochip Thumbnail Format |
| 232 | CCI Opener | Champions Interlace Compressed Picture Image Format |
| 233 | CCIP Opener | Curse Client Install Package |
| 234 | CCJ Opener | Crossword Compiler Compiled Crossword Applet |
| 235 | CCK Opener | Corel Clipart |
| 236 | CCL Opener | CCTools Levelset |
| 237 | CCLD Opener | Construction Clouds Data Format |
| 238 | CCM Opener | Multimedia Fusion Custom Menu |
| 239 | CCMG Opener | STAR-CD Solver Ready Geometry Data Format |
| 240 | CCMP Opener | STAR-CD Results Data Format |
| 241 | CCMT Opener | STAR-CD Transient Data Format |
| 242 | CCN Opener | Multimedia Fusion Development Format |
| 243 | CCO Opener | Apple Cocoa |
| 244 | CCP Opener | CloneCD Profiles Format |
| 245 | CCP4 Opener | Collaborative Computational Project Number 4 Format Format |
| 246 | CCPROJ Opener | Microsoft Visual Studio Cloud Service Project Format |
| 247 | CCR Opener | ASTM Continuity Of Care Record |
| 248 | CCRF Opener | Calcomp Raster Bitmap Image |
| 249 | CCS Opener | TrialDirector Clip Script Format |
| 250 | CCSCC Opener | ClearCase Source Control Info Format |
| 251 | CCT Opener | Director Protected Cast Resource |
| 252 | CCU Opener | CryptLoad Update Data Format |
| 253 | CCW Opener | Crossword Compiler Saved Puzzle |
| 254 | CCWSLN Opener | Connected Components Workbench |
| 255 | CCX Opener | Click & Create Extension |
| 256 | CCXML Opener | Call Control EXtensible Markup Language |
| 257 | CD Opener | Visual Studio Class Diagram |
| 258 | CD2 Opener | DATAIR Cafeteria Document System Custom Text |
| 259 | CD5 Opener | Chasys Draw Image |
| 260 | CDA Opener | CD Audio Track |
| 261 | CDADJ Opener | Cyberlink PowerDirector Data Format |
| 262 | CDATA Opener | Command & Conquer 3 Audio |
| 263 | CDB Opener | Symbian Phonebook Database |
| 264 | CDBCMSG Opener | CIM Database CMSG Data Format |
| 265 | CDC Opener | AutoCAD DesignCenter Preview Cache Format |
| 266 | CDD Opener | ConceptDraw PRO Document |
| 267 | CDDA Opener | CD Digital Audio Format |
| 268 | CDDX Opener | Circuit Diagram Document |
| 269 | CDDZ Opener | ConceptDraw Document Format |
| 270 | CDE Opener | CADKEY Dynamic Extension |
| 271 | CDEM Opener | CompeGPS Land Landscape |
| 272 | CDF Opener | Computable Document Format Format |
| 273 | CDF-MS Opener | ClickOnce Compiled Manifest Format |
| 274 | CDFX Opener | Cindex |
| 275 | CDG Opener | DART Karaoke Studio Lyrics Format |
| 276 | CDI Opener | DiscJuggler Disc Image |
| 277 | CDJ Opener | DiscJuggler CD-ROM Data |
| 278 | CDK Opener | Calamus SL Document |
| 279 | CDL Opener | CADKEY Wireframe Design Format |
| 280 | CDLX Opener | Audition CD Layout Format |
| 281 | CDM Opener | NTI CD-Maker Image |
| 282 | CDMEDIA Opener | Boxer For Mac Cd-rom |
| 283 | CDML Opener | Creately Document Markup Language Document Format |
| 284 | CDMM Opener | ConceptDraw MINDMAP Document |
| 285 | CDMP Opener | WCS Device Model Profile |
| 286 | CDMT Opener | ConceptDraw MINDMAP Template |
| 287 | CDMTZ Opener | Compressed ConceptDraw MINDMAP Template |
| 288 | CDMZ Opener | Compressed ConceptDraw MINDMAP Document |
| 289 | CDO Opener | Crescendo Music Score Format |
| 290 | CDOC Opener | DigiDoc Client Container |
| 291 | CDP Opener | Trainz Simulator Content Dispatcher Pack |
| 292 | CDP2 Opener | Trainz Classics Content Dispatcher Pack 2 |
| 293 | CDPROJ Opener | CppDepend Project Format |
| 294 | CDPX Opener | ConceptDraw PROJECT XML Format |
| 295 | CDPZ Opener | ConceptDraw PROJECT Document |
| 296 | CDR Opener | CorelDRAW Image Format |
| 297 | CDR3 Opener | CorelDRAW 3 For Mac Vector Or Bitmap Image |
| 298 | CDR4 Opener | CorelDRAW 4 For Mac Vector Or Bitmap Image |
| 299 | CDR5 Opener | CorelDRAW 5 For Mac Vector Or Bitmap Image |
| 300 | CDR6 Opener | CorelDRAW 6 For Mac Vector Or Bitmap Image |
| 301 | CDRW Opener | CorelDRAW For Mac |
| 302 | CDRX Opener | Bosch Crash Data Retrieval Data Format |
| 303 | CDRZIP Opener | DICOM Compressed Image |
| 304 | CDS Opener | ChemDraw Stationery Document |
| 305 | CDSG Opener | DrawMusic Chord Song |
| 306 | CDSX Opener | ConceptDraw PRO XML Slide Show Format |
| 307 | CDT Opener | CorelDRAW Image Template |
| 308 | CDT6 Opener | CorelDRAW 6 For Mac Template |
| 309 | CDTX Opener | ConceptDraw PRO XML Template Format |
| 310 | CDT_ Opener | CorelDRAW For Mac Template |
| 311 | CDU Opener | CDU Paint Image Format |
| 312 | CDV Opener | CatDV Catalog |
| 313 | CDW Opener | KOMPAS Document |
| 314 | CDWS Opener | CorelDraw Workspace Format |
| 315 | CDX Opener | CorelDRAW Compressed Drawing Format |
| 316 | CDXL Opener | Amiga Movie Format Format |
| 317 | CDXML Opener | ChemDraw XML Format |
| 318 | CDY Opener | Cinderella Construction Data Format |
| 319 | CDZ Opener | ROM With A View Project Format |
| 320 | CE Opener | ComputerEyes Image |
| 321 | CE0 Opener | Winewar Worm |
| 322 | CE1 Opener | Computer Eyes Raw Image Format |
| 323 | CE2 Opener | Computer Eyes Raw Image Format |
| 324 | CEA Opener | DAZ 3D Carrara Pro Export |
| 325 | CEB Opener | Apabi EBook Format |
| 326 | CEBX Opener | Apabi E-Book Data Format |
| 327 | CED Opener | JVC Camera Video Data Format |
| 328 | CEDATA Opener | Pogoplug |
| 329 | CEDF Opener | TC Configuration Editor Data Format |
| 330 | CEDPRJ Opener | Ashampoo CoverEditor Project |
| 331 | CEF Opener | CenturionMail Encrypted Package |
| 332 | CEI Opener | CRiSP Harvest |
| 333 | CEID Opener | Seagate Dockstar Configuration Format |
| 334 | CEIMG Opener | CeRegEditor Registry Image |
| 335 | CEKEY Opener | McAfee VirusScan Configuration Format |
| 336 | CEL Opener | Affymetrix Probe Results Format |
| 337 | CELL Opener | CASTEP Supercell Material Data |
| 338 | CELTX Opener | Celtx Project Format |
| 339 | CELX Opener | Celestia Script |
| 340 | CEM Opener | Empire Earth Game Format |
| 341 | CENON Opener | Cenon Project Format |
| 342 | CENON~ Opener | Cenon Project Backup Format |
| 343 | CEO Opener | Winewar Worm |
| 344 | CEP Opener | CostOS Estimating Project Database Format |
| 345 | CER Opener | Internet Security Certificate |
| 346 | CERBER Opener | Cerber Ransomware Affected Data Format |
| 347 | CERT Opener | Netscape Certificate Index |
| 348 | CERTAUTHORITYCONFIG Opener | Apple Mac OS X Certificate Assistant Configuration |
| 349 | CERTSIGNINGREQUEST Opener | Apple Mac OS X Certificate Assistant |
| 350 | CESF Opener | Ultra TC Configuration Editor Script Format |
| 351 | CET Opener | Hitachi Cobol |
| 352 | CETRAINER Opener | DBVM |
| 353 | CEX Opener | SolidWorks Enterprise PDM Vault Export Format |
| 354 | CEZEOKEY Opener | CEZEO Key Data Format |
| 355 | CF Opener | Sendmail Configuration Format |
| 356 | CF1 Opener | Common Format Format 1 Format |
| 357 | CF2 Opener | Common Format Format Format |
| 358 | CF5 Opener | DocuWare |
| 359 | CF7 Opener | Toshiba ConfigFree Profile Handling Module |
| 360 | CF8 Opener | Cashflow Manager Data Format |
| 361 | CF9 Opener | Cashflow Manager Accounting Data Format |
| 362 | CFA Opener | Adobe Conformed Audio Format |
| 363 | CFB Opener | Disk Drill Recovered |
| 364 | CFC Opener | ColdFusion Component Format |
| 365 | CFD Opener | CryptoForge Document |
| 366 | CFDI Opener | Comprobante Fiscal Digital Por Internet |
| 367 | CFE Opener | CryptoForge Encrypted |
| 368 | CFF Opener | ColorImpact Color Formula Format |
| 369 | CFF2 Opener | Kodak Pandora Exported |
| 370 | CFG Opener | Configuration Format |
| 371 | CFGE Opener | Jewel Quest Configuration Format |
| 372 | CFI Opener | CleverForm Script |
| 373 | CFK Opener | Microsoft Developer Studio Diagram |
| 374 | CFL Opener | IMVU Product Format |
| 375 | CFM Opener | ColdFusion Markup Format |
| 376 | CFML Opener | ColdFusion Markup Language Format |
| 377 | CFN Opener | Calamus Font Data |
| 378 | CFO Opener | Turbo C Utilities C Form Object |
| 379 | CFOS6LINK Opener | CFos IPv6 Link Registration Data Format |
| 380 | CFOSSPEED Opener | CFosSpeed Registration Key Format |
| 381 | CFP Opener | Bitmap Native Format For CoverFactory |
| 382 | CFPRESET Opener | SA Color Finesse Plugin For Adobe After Effects |
| 383 | CFR Opener | Cross Fire Replay Format |
| 384 | CFREPLAY Opener | Crossfire Europe Replay |
| 385 | CFS Opener | INMOS Configuration Format |
| 386 | CFT Opener | CFast Graphics |
| 387 | CFW Opener | ChemFinder Form |
| 388 | CFX Opener | Magix Movie Edit Pro |
| 389 | CFXR Opener | Cocoa Sfxr Format |
| 390 | CFXXE Opener | Possibly Malware |
| 391 | CFZ Opener | Compressed Archive |
| 392 | CG Opener | Cg Program |
| 393 | CG3 Opener | Cabri 3D Document |
| 394 | CG4 Opener | CALS Group IV Bitmap Graphics |
| 395 | CGA Opener | Ventura Publisher CGA Display Font |
| 396 | CGD Opener | CricketGraph Data |
| 397 | CGDB Opener | Microsoft Clip Art Package |
| 398 | CGF Opener | Crytek Geometry Format Format |
| 399 | CGFX Opener | CgFX Shader Format |
| 400 | CGI Opener | Common Gateway Interface Script |
| 401 | CGINC Opener | Unity Custom Shader Include |
| 402 | CGK Opener | BlueSoleil |
| 403 | CGM Opener | Computer Graphics Metafile |
| 404 | CGMAP Opener | CityGuide Region Map |
| 405 | CGNS Opener | CFD General Notation System Data Format |
| 406 | CGO Opener | Railroad Tycoon 3 Car Properties |
| 407 | CGP Opener | PixelCryptor Encrypted Format |
| 408 | CGR Opener | CATIA Graphical Representation Format |
| 409 | CGRP Opener | Pro Tools Clip Group Format |
| 410 | CGS Opener | CGS General Motors CAD Drawing Format |
| 411 | CGT Opener | Gold Parsing System Compiled Grammar Table |
| 412 | CGV Opener | OSLay Parameters Data Format |
| 413 | CGVP Opener | NVidia Cg Programming Language XML |
| 414 | CGX Opener | ARM RL-TCPnet HTTP Web Server XML Web Page Update Script |
| 415 | CGZ Opener | Linux Drivers Archive |
| 416 | CH Opener | OS/2 Configuration |
| 417 | CH1 Opener | IBM Freelance Graphics Chart |
| 418 | CH10 Opener | Irig 106 Original Recording |
| 419 | CH3 Opener | Harvard Graphics DOS Chart Format |
| 420 | CH4 Opener | WSxM |
| 421 | CH5 Opener | VisIt |
| 422 | CH6 Opener | ZX-Paintbrush Character Format |
| 423 | CH8 Opener | ZX-Paintbrush Character Format |
| 424 | CHA Opener | IRC Chat Configuration Format |
| 425 | CHAM Opener | Compiled HAM Format |
| 426 | CHANGEDB Opener | SQLite Data Format |
| 427 | CHANGEDB-JOURNAL Opener | SQLite Data Format |
| 428 | CHAP Opener | MP4 Movie Chapter |
| 429 | CHAPTERS Opener | ChapterGrabber Data Format |
| 430 | CHAR Opener | Nintendo DS Character Tile Data Format |
| 431 | CHARMM Opener | CHARMm Chemical Modeller Input |
| 432 | CHARSCIRPT Opener | Divinity: Original Sin Game Data Format |
| 433 | CHARSET Opener | Character Set |
| 434 | CHART Opener | Feedback Chart Format |
| 435 | CHAT Opener | IRC Chat Configuration Format |
| 436 | CHATLOG Opener | Adium Chat Log |
| 437 | CHC Opener | HCFR Colorimeter Data Format |
| 438 | CHD Opener | MAME Hard Disk Image |
| 439 | CHE Opener | CHwinEHE Project |
| 440 | CHECK Opener | CASTEP Check Binary Data Format |
| 441 | CHEF Opener | Chef Source Code Format |
| 442 | CHEM Opener | WRF/CHEM Chemical Data Format |
| 443 | CHESSTITANSSAVE-MS Opener | Microsoft Chess Titans Saved Game |
| 444 | CHF Opener | PcAnywhere Remote Control |
| 445 | CHG Opener | Quicken Online Data Format |
| 446 | CHH Opener | C++ Header |
| 447 | CHI Opener | Microsoft Help Index |
| 448 | CHJ Opener | IBM SPSS Interview Cache |
| 449 | CHK Opener | ScanDisk Format Fragment |
| 450 | CHKN Opener | IMVU Create Mode Temporary |
| 451 | CHKSPLIT Opener | Incredible Bee Archiver Checksum |
| 452 | CHL Opener | Microsoft Internet Explorer Channel Information Format |
| 453 | CHLS Opener | Charles Session Format |
| 454 | CHM Opener | Compiled HTML Help Format |
| 455 | CHML Opener | Chameleon Encrypted Database Format |
| 456 | CHMPRJ Opener | Abee CHM Maker HTML Archive Format |
| 457 | CHM_1029 Opener | Microsoft Installation Data Format |
| 458 | CHN Opener | Ethnograph Data |
| 459 | CHO Opener | Animation:Master Choreography |
| 460 | CHORD Opener | Song Chords Format |
| 461 | CHP Opener | Ventura Publisher Chapter Document |
| 462 | CHQ Opener | Microsoft Help Combined Full-text Search |
| 463 | CHR Opener | 3ds Max Characters Format |
| 464 | CHR0 Opener | Nintendo Wii Model Animation Format |
| 465 | CHRPARAMS Opener | CryENGINE Character Parameters Format |
| 466 | CHS Opener | Windows Chinese Noise-Word List Format |
| 467 | CHT Opener | SNES Cheat Format |
| 468 | CHTML Opener | Compact HTML Document |
| 469 | CHU Opener | Infinity Engine Game Data Format |
| 470 | CHUNK001 Opener | File Splitter Split Archive Part 1 |
| 471 | CHUZZLEDELUXESAVEDGAME Opener | Chuzzle Deluxe Saved Game Format |
| 472 | CHV Opener | ChView Interactive Star Map Format |
| 473 | CHW Opener | Compiled Help Index Format |
| 474 | CHX Opener | AutoCAD Standards Check Format |
| 475 | CHY Opener | FileMaker Pro Data Format |
| 476 | CI Opener | CitectSCADA Format |
| 477 | CIA Opener | Sheffield Dictionary Data Format |
| 478 | CIB Opener | Compressed RAW Image Format |
| 479 | CIC Opener | Hitachi Ladder Editor Circuit Comment Format |
| 480 | CID Opener | CoDiagnostiX User Defined Implant |
| 481 | CIDA Opener | Xplorer² Scrap Document Format |
| 482 | CIDB Opener | Apple ITunes CD Information Format |
| 483 | CIE Opener | CIE Format Format Format - Color Information Format |
| 484 | CIF Opener | Easy CD Creator Disk Image |
| 485 | CIH Opener | Chernobyl Virus Data Format |
| 486 | CII Opener | Caesar II |
| 487 | CIK Opener | Corel Graphics 10 Custom Dual Tone |
| 488 | CIL Opener | Clip Gallery Packaged Format |
| 489 | CILX Opener | Volume Activation Management Tool Data Format |
| 490 | CIM Opener | CimPack Design Drawing |
| 491 | CIMG Opener | CImg Image Format |
| 492 | CIN Opener | Kodak Cineon Bitmap Format |
| 493 | CIN96LM Opener | Microsoft Cinemania |
| 494 | CIN96UPD Opener | Microsoft Cinemania Format |
| 495 | CINE Opener | Phantom Digital Video Format |
| 496 | CINEMA4D Opener | Cinema 4D For Amiga |
| 497 | CIO Opener | SWAT Master Watershed |
| 498 | CIP Opener | CryptoBuddy Encrypted Format |
| 499 | CIPO Opener | Cartesian Products Compressed Internet Document |
| 500 | CIR Opener | Supermax ECAD Command Save |
| 501 | CIRC Opener | Logisim Circuit |
| 502 | CIRCUIT Opener | KTechlab Circuit Design Format |
| 503 | CIS Opener | CheckInbox |
| 504 | CIS2 Opener | ProSteel Document Format |
| 505 | CISO Opener | Wii Compressed Game Image |
| 506 | CIT Opener | Intergraph Bitmap Image Format |
| 507 | CITRIODOWNLOAD Opener | Citrio Incomplete Download Format |
| 508 | CITRIXONLINE Opener | GoToMeeting Data Format |
| 509 | CITRIXONLINE312 Opener | GoToMeeting Data Format |
| 510 | CITRIXONLINE393 Opener | GoToMeeting Data Format |
| 511 | CIV Opener | Empire Earth Custom Civilization Information |
| 512 | CIV4REPLAY Opener | Sid Meiers Civilization 4 Replay Format |
| 513 | CIV4SAVEDGAME Opener | Civilization IV Save Game Format |
| 514 | CIV4WORLDBUILDERSAVE Opener | Civilization IV World Builder Save Format |
| 515 | CIV5MAP Opener | Civilization 5 Map |
| 516 | CIV5MOD Opener | Civilization 5 Mod Format |
| 517 | CIV5PROJ Opener | Civilization 5 Game Data Format |
| 518 | CIV5SAVE Opener | Civilization 5 Saved Gae |
| 519 | CIV5SLN Opener | Civilization 5 Game Data Format |
| 520 | CIVBEYONDSWORDSAVE Opener | Civilization IV: Beyond The Sword Save Game Format |
| 521 | CIVBEYONDSWORDWBSAVE Opener | Civilization IV Game Data Format |
| 522 | CIVWARLORDSREPLAY Opener | Sid Meiers Civilization 4 Replay Format |
| 523 | CIW Opener | Web Of Science Export |
| 524 | CIX Opener | Rational XDE |
| 525 | CJSTYLES Opener | Skin Builder Project |
| 526 | CK Opener | ChucK Source Code Format |
| 527 | CK1 Opener | Commander Keen 1 Game Data |
| 528 | CK2 Opener | Commander Keen 2 Game Data |
| 529 | CK3 Opener | Commander Keen 3 Game Data |
| 530 | CK4 Opener | Commander Keen 4 Game Data |
| 531 | CK5 Opener | Commander Keen 5 Game Data |
| 532 | CK6 Opener | Commander Keen 6 Game Data |
| 533 | CK9 Opener | DVN Cookn Cookbook Backup Format |
| 534 | CKA Opener | Comfort Keys Database |
| 535 | CKB Opener | Cricket Audio Bank Format |
| 536 | CKBX Opener | Cricket Audio XML Bank Description Format |
| 537 | CKD Opener | CADKEY Design Format |
| 538 | CKF Opener | Casio Keyboard Format |
| 539 | CKM Opener | Creation Kit Macro Format |
| 540 | CKP Opener | Ingres Database Checkpoint Data |
| 541 | CKS Opener | Microsoft Windows CE Image Info |
| 542 | CKT Opener | CircuitMaker Format |
| 543 | CKZ Opener | QuickSFV Format Verification Database |
| 544 | CL Opener | Cursor Library |
| 545 | CL2 Opener | HY-TEK Meet Results Format |
| 546 | CL2ARC Opener | Comic Life 2 Document Archive |
| 547 | CL2DOC Opener | Comic Life 2 Document |
| 548 | CL2LYT Opener | Comic Life 2 Layout Format |
| 549 | CL2TPL Opener | Comic Life 2 Template |
| 550 | CL3 Opener | Easy CD Creator CD Layout |
| 551 | CL4 Opener | Easy CD Creator 4 Project Format |
| 552 | CL5 Opener | Easy CD Creator 5 Saved Project |
| 553 | CL7 Opener | Free Clipboard Viewer Data Format |
| 554 | CLA Opener | Clarion For DOS Source Code |
| 555 | CLAF Opener | Claris Font |
| 556 | CLAM Opener | Adobe InDesign Dictionary |
| 557 | CLARIFY Opener | Clarify Document |
| 558 | CLAS Opener | Java Class |
| 559 | CLASS Opener | Java Class Format |
| 560 | CLASSDIAGRAM Opener | Microsoft Visual Studio Class Diagram |
| 561 | CLASSLIST Opener | SMART Notebook Class List Format |
| 562 | CLASSPATH Opener | Eclipse IDE JAVA Project Related |
| 563 | CLB Opener | Super NoteTab ClipBook Template Format |
| 564 | CLBX Opener | MP3 Automagic CD Cover Creator Label |
| 565 | CLC Opener | Microsoft Schedule+ 7 Habits Mission Statement |
| 566 | CLD Opener | Canon CD Label Template |
| 567 | CLDCVT Opener | CD-LabelPrint Converted Data |
| 568 | CLDLYR Opener | TerraGen Cloud Layer |
| 569 | CLE Opener | Icon Lock-iT Locked Format Indicator |
| 570 | CLEAN Opener | Instagram For Android Cache Format |
| 571 | CLEO Opener | CLEO Grand Theft Auto Mod Format |
| 572 | CLF Opener | ListPro |
| 573 | CLG Opener | QIP List Of Ignored Contacts Format |
| 574 | CLGX Opener | Collage Maker Collage |
| 575 | CLI Opener | Client Management System Customer |
| 576 | CLIB Opener | CATS Library Data Format |
| 577 | CLIP Opener | Grand Theft Auto V Clip Format |
| 578 | CLIPPING Opener | Apple Mac OS X Finder |
| 579 | CLIPS Opener | Coda Clips Format |
| 580 | CLIX Opener | CLIX Command Format |
| 581 | CLJ Opener | Clojure Source Code |
| 582 | CLJS Opener | ClojureScript Script Format |
| 583 | CLJX Opener | Visual Studio Code Data Format |
| 584 | CLK Opener | Corel R.A.V.E Project Format |
| 585 | CLKB Opener | Clicker Book Data Format |
| 586 | CLKBD Opener | Clicker Board Set Format |
| 587 | CLKC Opener | Clicker Connect Set Format |
| 588 | CLKD Opener | Clicker Document Format |
| 589 | CLKK Opener | Clicker Keyboard |
| 590 | CLKP Opener | Clicker Palette Format |
| 591 | CLKT Opener | Clicker Template |
| 592 | CLKW Opener | Clicker Word Bank |
| 593 | CLKX Opener | Clicker Grid Set |
| 594 | CLL Opener | Crick Software Clicker |
| 595 | CLLE_PROPERTIES Opener | Eclipse Settings Format |
| 596 | CLM Opener | MagicJack Call Log Format |
| 597 | CLM2 Opener | Clipboard Master Database Format |
| 598 | CLMLIC Opener | Clipboard Master License Format |
| 599 | CLMS Opener | Clipboard Master Settings Format |
| 600 | CLN Opener | Microsoft Windows 3.x Configuration Backup |
| 601 | CLO Opener | Cloe Ray-Tracer Image |
| 602 | CLOE Opener | Cloe Ray-Tracer Image |
| 603 | CLOG Opener | SpreadMaster Client Log Format |
| 604 | CLOJURE Opener | Clojure Source Code Format |
| 605 | CLONECD Opener | CloneCD Registration Data Format |
| 606 | CLONEDVD Opener | CloneDVD Registration Data Format |
| 607 | CLONEDVDMOBILE Opener | CloneDVD Mobile Registration Key Format |
| 608 | CLOUD Opener | GOM Atos Scanner |
| 609 | CLOUDPHOTODB Opener | Apple Photos Database Format |
| 610 | CLOUDPHOTODB-SHM Opener | Apple Photos Database Related Data Format |
| 611 | CLOUDPHOTODB-WAL Opener | Apple Photos Database Format |
| 612 | CLP Opener | CrazyTalk Clip Format |
| 613 | CLPI Opener | Blu-ray Clip Information Format |
| 614 | CLPPRJ Opener | CodeLobster PHP Edition Project |
| 615 | CLR Opener | Flash Color Set |
| 616 | CLR0 Opener | Nintendo Wii Color Swapping Animation |
| 617 | CLS Opener | LaTeX Document Class Format |
| 618 | CLSID Opener | CLSID Identifier Format |
| 619 | CLSJ Opener | Cyberlink PowerDVD Data Format |
| 620 | CLT Opener | Clarity Legal Transcript Format |
| 621 | CLU Opener | Broken Sword 2 Dialogue |
| 622 | CLV Opener | QIP Visible List |
| 623 | CLW Opener | Visual C++ ClassWizard Format |
| 624 | CLX Opener | Standard Dictionary Format |
| 625 | CLY Opener | CorelDRAW Custom Layout |
| 626 | CLZ Opener | Tomb Raider: The Angel Of Darkness Game |
| 627 | CM Opener | CLEO Custom Mission |
| 628 | CM0013 Opener | Device Identify Data Format |
| 629 | CM10 Opener | CaseMap Case Format |
| 630 | CM2 Opener | Poser Camera Set Format |
| 631 | CM3 Opener | CaseMap Data |
| 632 | CM4 Opener | ClipMate Data |
| 633 | CM5 Opener | LexisNexis Case Analysis |
| 634 | CM8 Opener | CaseMap Case |
| 635 | CMA Opener | TM1 Exported Cube Format |
| 636 | CMAKE Opener | CMake Module |
| 637 | CMAP Opener | CmapTools Concept Map Format |
| 638 | CMATE Opener | ControllerMate Configuration Format |
| 639 | CMB Opener | Xtree For Windows Button Bar |
| 640 | CMBL Opener | Logger Pro Data Format |
| 641 | CMC Opener | Comic Collector Collection Data |
| 642 | CMD Opener | Windows Command Format |
| 643 | CMDB Opener | ANSYS CFX Mesh Database |
| 644 | CMDF Opener | CrystalMaker Data |
| 645 | CMDT Opener | Claris Dictionary |
| 646 | CME Opener | Crazy Machines Level Format |
| 647 | CMF Opener | Creative Labs FM-synthesis Music Format |
| 648 | CMG Opener | ChessMaster Saved Game |
| 649 | CMH Opener | PLINK Test Report Format |
| 650 | CMI Opener | The Dig Bundle |
| 651 | CML Opener | Chemical Markup Language Format |
| 652 | CMM Opener | Corel Multimedia Manager Album |
| 653 | CMMCD Opener | Camtasia Studio MenuMaker Project |
| 654 | CMMP Opener | Camtasia MenuMaker Project |
| 655 | CMMTHEME Opener | CleanMyMac Theme Format |
| 656 | CMMTPL Opener | Camtasia MenuMaker Template |
| 657 | CMN Opener | Systems Management Server (SMS) Update |
| 658 | CMO Opener | Spanish Whiz Sound |
| 659 | CMOD Opener | Celestia Model |
| 660 | CMP Opener | PKWare Compression Library Archive Format |
| 661 | CMP7 Opener | Araxis Merge Comparison Data Format |
| 662 | CMPROJ Opener | Camtasia Project Format |
| 663 | CMP_XML Opener | Solid Edge XML Design |
| 664 | CMR Opener | Coach Saved Results |
| 665 | CMRBK Opener | CaseMap ReportBook Definition |
| 666 | CMREC Opener | Camtasia Recording |
| 667 | CMS Opener | CaseMap Case Script Format |
| 668 | CMT Opener | Chinon ES-1000 Digital Camera Image Format |
| 669 | CMTX Opener | E-Sword Commentary |
| 670 | CMU Opener | CMU Window Manager Bitmap Image |
| 671 | CMV Opener | CorelDRAW CorelMove Animation |
| 672 | CMW Opener | Microsoft Office Custom Maintenance Wizard Data |
| 673 | CMX Opener | Corel Metafile Exchange Image Format |
| 674 | CMY Opener | CorelDraw Custom |
| 675 | CMYK Opener | Raw Cyan, Magenta, Yellow And Black Bytes Bitmap Image Format |
| 676 | CMZ Opener | Compressed Poser Camera Set Format |
| 677 | CN Opener | CNwin/MLwin Account |
| 678 | CN1 Opener | CNR Modem Initialization Data Format |
| 679 | CN3 Opener | CN3D |
| 680 | CNA Opener | Catena Project Format |
| 681 | CNB Opener | Pegasus Mail Noticeboard Mail Stored Message |
| 682 | CNC Opener | PartMaster CNC Format |
| 683 | CNC3CAMPAIGN Opener | Command And Conquer 3 Campaign Save Game |
| 684 | CND Opener | Melco Condensed Embroidery Format |
| 685 | CNDX Opener | Avery DesignPro For Mac Label Format |
| 686 | CNF Opener | MySQL Configuration Format |
| 687 | CNG Opener | CryptoNG Encrypted Format |
| 688 | CNI Opener | CWBench |
| 689 | CNJ Opener | Acharya Conjunct Data Format |
| 690 | CNK Opener | Microsoft Dynamics GP Chunk |
| 691 | CNM Opener | NoteMap Outline Format |
| 692 | CNN Opener | ADO-network Connection Configuration |
| 693 | CNO Opener | INet-Server Error Description |
| 694 | CNQ Opener | WebShop Platinum Project |
| 695 | CNR Opener | Pegasus Mail Mail Message Stored In Systemwide Folder |
| 696 | CNS Opener | Windows 2000 Client Connection Manager Export Format |
| 697 | CNT Opener | Help Contents Format |
| 698 | CNTK Opener | Microsoft Outlook Express Contact |
| 699 | CNTL Opener | GoCart Control |
| 700 | CNV Opener | Canvas 6-8 Drawing Format |
| 701 | CNX Opener | Pegasus Mail |
| 702 | CO Opener | Cobalt 3D |
| 703 | COA Opener | Caligari TrueSpace 3D Object |
| 704 | COB Opener | COBOL Source Code Format |
| 705 | COBOL Opener | Micro-Focus Cobol Data Format |
| 706 | COC Opener | Bibexcel |
| 707 | COD Opener | Compiled Source Code |
| 708 | CODAPLUGIN Opener | Coda Plug-in |
| 709 | CODASITE Opener | Coda Site Format |
| 710 | COE Opener | Xilinx BRAM Initialization |
| 711 | COF Opener | AutoDesk Data Format |
| 712 | COFFEE Opener | CoffeeScript JavaScript Format |
| 713 | COG Opener | SolidWorks Compiled Log Format |
| 714 | COK Opener | INet-Server Error Report |
| 715 | COL Opener | Capture One Session Format |
| 716 | COLLAB Opener | Collaborate Collaboration Data Format |
| 717 | COLLECTION Opener | Adobe Bridge Collection Format |
| 718 | COLLISIONMESH Opener | Battlefield Collision Mesh |
| 719 | COLLOQUYTRANSCRIPT Opener | Colloquy Chat Transcript |
| 720 | COLOR Opener | Amaya Config |
| 721 | COLORPICKER Opener | Color Picker Plugin |
| 722 | COLORS Opener | SAM Makelogo Color |
| 723 | COLOURSCHEME Opener | J&ASoft Speedy Browser Color Scheme Settings |
| 724 | COLR Opener | Kaleidoscope Scheme |
| 725 | COLZ Opener | Adobe Collage Format |
| 726 | COM Opener | DOS Command Format |
| 727 | COMFYCAKESSAVE-MS Opener | Comfy Cakes Saved Game |
| 728 | COMICDOC Opener | Comic Life Document |
| 729 | COMICLIFE Opener | Comic Life Document Format |
| 730 | COMICSTL Opener | Comic Life Stylesheet Format |
| 731 | COMICTPL Opener | Comic Life Template Format |
| 732 | COMMAND Opener | Terminal Command Format |
| 733 | COMMANDERDOC Opener | Apple Qmaster |
| 734 | COMMON Opener | Unix Script |
| 735 | COMP Opener | CodeWarrior Compiler |
| 736 | COMPARISON Opener | Merge Comparison Report |
| 737 | COMPARISON7 Opener | Araxis Merge Comparison Data Format |
| 738 | COMPILED Opener | Plants Vs. Zombies Compiled Game Resource Format |
| 739 | COMPLETE Opener | SendSafe Deciphered E-message |
| 740 | COMPO Opener | DAZ 3D Carrara Pro 7 Or 8 Temporary |
| 741 | COMPONENT Opener | Mac OS X System Component |
| 742 | COMPONENTDIAGRAM Opener | Microsoft Visual Studio Component Diagram |
| 743 | COMPONENTS Opener | Mac OS X System |
| 744 | COMPOSITEFONT Opener | Windows Composite Font Format |
| 745 | COMPOSITIONMODEL Opener | Invantive Composition Data Model |
| 746 | COMPOSITIONTEMPLATE Opener | Invantive Composition Template Format |
| 747 | COMPRESS Opener | Microsoft Compress |
| 748 | COMPRESSED Opener | WordCompress Compacted Web Format |
| 749 | COM_ Opener | Emu8086 Assembly Source Code Format |
| 750 | CON Opener | Corel WordPerfect Concordance Format |
| 751 | CONF Opener | Configuration Information Format |
| 752 | CONF-AUTO Opener | WOW! Configuration Data Format |
| 753 | CONFIG Opener | Configuration Format |
| 754 | CONFIGPROFILE Opener | Apple Configuration Profile |
| 755 | CONFIGSETTINGS Opener | Microsoft SQL Server Analysis Services Settings Format |
| 756 | CONFIGURE Opener | Bash |
| 757 | CONFLUENCE Opener | Eclipse Mylyn WikiText Confluence |
| 758 | CONFORM Opener | Conformalizer Change List Format |
| 759 | CONSIS Opener | Sciral Consistency Data Format |
| 760 | CONSOLE Opener | Widows NT Console |
| 761 | CONT Opener | Panasonic Camcorder Extra |
| 762 | CONTACT Opener | Windows Contact Format |
| 763 | CONTACTS Opener | Contact Format |
| 764 | CONTAINER Opener | Eclipse Project Settings Format |
| 765 | CONTENT Opener | Rust Game Data Format |
| 766 | CONTENTPROJ Opener | XNA Game Studio Game Content Project |
| 767 | CONTENTS Opener | MAC OS X |
| 768 | CONTENTSOFCLIPBOARD Opener | WinXP Powertoy |
| 769 | CONTOUR Opener | Contour Screenplay Format |
| 770 | CONTROLS Opener | OpenBVE Keyboard Shortcuts Format |
| 771 | CONVERTERX Opener | SiMX TextConverter Project |
| 772 | COO Opener | AutoCAD Bounding Coordinates Cookie |
| 773 | COOK Opener | Netscape For Mac Cookie |
| 774 | COOKIEDB Opener | Unknown Format Extension Format |
| 775 | COOL Opener | QB - Text Analyzer Vocabulary List |
| 776 | COORDS Opener | Ribbons Coords |
| 777 | COP Opener | Sam Coupé Sound |
| 778 | COPRESET Opener | Capture One Preset Format |
| 779 | COPY Opener | Sony Ericsson Protected Content Format |
| 780 | COR Opener | CorelDRAW Drawing |
| 781 | CORD Opener | Microsoft Visual Studio Script Format |
| 782 | COS Opener | Capture One Settings Format |
| 783 | COS2 Opener | Pinnacle Studio Cache Format |
| 784 | COSTYLE Opener | Capture One Style Format |
| 785 | COUNTER Opener | Netobjects Fusion Components Bbscomp Message |
| 786 | COUNTRY_HISTORY Opener | HERE Maps For Android Data Format |
| 787 | COV Opener | Fax Cover Page Format |
| 788 | COVERAGE Opener | Microsoft Visual Studio Code Coverage |
| 789 | COVERAGEXML Opener | Microsoft Visual Studio Code Coverage |
| 790 | COW Opener | Thief Game |
| 791 | COX Opener | Click & Create Extension |
| 792 | COZ Opener | EFILive Calibration Data Format |
| 793 | CP Opener | Xcode C++ Source Format |
| 794 | CP1 Opener | CARE-S InfoWorks Phosphorus Detail |
| 795 | CP2 Opener | ChessBase Theme Classification |
| 796 | CP3 Opener | Grand Prix 3 Cockpit Shape Format |
| 797 | CP8 Opener | CP8 256 Gray Scale Image |
| 798 | CP9 Opener | ChoicePoint Encrypted Format |
| 799 | CP? Opener | LoseThos C+ Source |
| 800 | CPA Opener | Adobe Premiere Conformed Audio Format |
| 801 | CPAA Opener | Adobe Captivate Shared Action Data Format |
| 802 | CPB Opener | Comicino Studio Project Format |
| 803 | CPBITMAP Opener | IOS Wallpaper Image |
| 804 | CPC Opener | CPC Compressed Image Format |
| 805 | CPCT Opener | Compact Pro Archive |
| 806 | CPD Opener | CorelDRAW Corel PrintOffice Drawing Format |
| 807 | CPDT Opener | Adobe Captivate Design Template |
| 808 | CPE Opener | Fax Cover Page Format |
| 809 | CPF Opener | Cognos Project Format |
| 810 | CPFF Opener | Cam2Com Capture Properties Format |
| 811 | CPG Opener | Manga Studio Page Format |
| 812 | CPGZ Opener | Compressed CPIO Archive |
| 813 | CPH Opener | Corel Print House Format |
| 814 | CPHD Opener | CloudChan Pre-processed Hypertext Document Format |
| 815 | CPI Opener | AVCHD Video Clip Information Format |
| 816 | CPIO Opener | Unix CPIO Archive |
| 817 | CPJ Opener | NVidia CUDA Project Format |
| 818 | CPK Opener | DTM Test Log Format |
| 819 | CPL Opener | Windows Control Panel Item |
| 820 | CPLIST Opener | GNU Makefile Format |
| 821 | CPLN Opener | KalOnline Extended Module Format |
| 822 | CPMZ Opener | Miradi/ConPro Project Format |
| 823 | CPN Opener | Age Of Mythology Campaign Format |
| 824 | CPO Opener | Corel Print House Data |
| 825 | CPP Opener | C++ Source Code Format |
| 826 | CPQ Opener | Compaq OEM Disc Configuration Format |
| 827 | CPR Opener | Cubase Project |
| 828 | CPRR Opener | Adobe Captivate XML Script |
| 829 | CPS Opener | Corel Photo House Format |
| 830 | CPT Opener | Corel Photo-Paint Document |
| 831 | CPT2 Opener | M-Tron Pro Library |
| 832 | CPTL Opener | Adobe Captivate Project Template Format |
| 833 | CPTM Opener | Adobe Captivate Theme |
| 834 | CPTX Opener | Adobe Captivate Project Format |
| 835 | CPU Opener | SiSoftware Sandra |
| 836 | CPUPROFILE Opener | Google Chrome DevTools Data Format |
| 837 | CPVC Opener | Adobe Captivate Video Composition Format |
| 838 | CPW Opener | Online Cost Planning Service Cost Planning Work Data Format |
| 839 | CPX Opener | Oracle ADF Binding Context Format |
| 840 | CPY Opener | 3ds Max Copy Track Format |
| 841 | CPZ Opener | LoseThos C+ Source |
| 842 | CQ Opener | SYSGEN Replacement Data Format |
| 843 | CQE Opener | Cumulus 6 Data Format |
| 844 | CQF Opener | PcAnywhere Command Queue Format |
| 845 | CQL Opener | XDCC Catcher Queue List |
| 846 | CQS Opener | ConQuest Search Data Format |
| 847 | CQT Opener | MAIL.DAT Container Quantity Data |
| 848 | CR Opener | CRiSP Source Code |
| 849 | CR1 Opener | LoggerNet CRBasic Source |
| 850 | CR2 Opener | Canon Raw Image Format |
| 851 | CR5 Opener | Survey Pro Coordinate |
| 852 | CRAFT Opener | KSP Spacecraft Format |
| 853 | CRASH Opener | Mac OS X Crash Log Format |
| 854 | CRASHED Opener | AbiWord Crash-Saved Document |
| 855 | CRATE Opener | Serato DJ Crate Plylist Format |
| 856 | CRB Opener | BigOven Recipe Database |
| 857 | CRC Opener | Total Commander Checksum Format |
| 858 | CRD Opener | Windows CardSpace Format |
| 859 | CRDOWNLOAD Opener | Chrome Partially Downloaded Format |
| 860 | CRDS Opener | Windows CardSpace Backup Format |
| 861 | CRE Opener | Infinity Engine Creature Data Format |
| 862 | CREC Opener | Microsoft Lync 2010 Recording |
| 863 | CREOLE Opener | Creole Source |
| 864 | CREV Opener | Adobe Captivate Commentable SWF Format |
| 865 | CRF Opener | Enhanced Dark Engine Game Archive Format |
| 866 | CRG Opener | Calamus Picture Image |
| 867 | CRH Opener | EN-CC Truss Geometry |
| 868 | CRI Opener | Crystal Reports |
| 869 | CRINF Opener | DecryptorMax Or CryptInfinite Ransomware Affected Data Format |
| 870 | CRL Opener | Certificate Revocation List Format |
| 871 | CRMLOG Opener | Microsoft Windows CRM Log |
| 872 | CRO Opener | CropWat Data Format |
| 873 | CRON Opener | Unraid OS Cron Data Format |
| 874 | CROP Opener | Crick Software Clicker Options Settings Format |
| 875 | CROSSDB Opener | Mixvibes Cross Collection Data Format |
| 876 | CROSSMEDIA Opener | Mixvibes Media Format |
| 877 | CRP Opener | CorelDRAW Corel Presents Run-time Presentation |
| 878 | CRPD Opener | Microsoft Windows SignTool Data Format |
| 879 | CRPLUGIN Opener | ComicRacks Plugin Format |
| 880 | CRPT Opener | Cryptosaurus Encrypted Data Format |
| 881 | CRQ Opener | Blackboard Course Request Data Format |
| 882 | CRR Opener | Complete Genomics Analysis Tools CRR Data Format |
| 883 | CRS Opener | Corel WordPerfect Conversion Resource Format |
| 884 | CRS3 Opener | OmniPage Lite |
| 885 | CRT Opener | Security Certificate |
| 886 | CRTR Opener | MultiAd Creator Pro Document |
| 887 | CRTX Opener | Office 2007 Chart Template Format |
| 888 | CRV Opener | CorelDRAW Corel PHOTO-PAINT 10 Custom Gradients Format |
| 889 | CRV3D Opener | Vectric Aspire 3D Drawing Format |
| 890 | CRW Opener | Canon Raw CIFF Image Format |
| 891 | CRWL Opener | Windows Crawl Format |
| 892 | CRX Opener | Chrome Extension |
| 893 | CRY Opener | CryENGINE Map Format |
| 894 | CRYP1 Opener | CryptXXX Ransomware Affected Data Format |
| 895 | CRYPROJECT Opener | CryENGINE Project Format |
| 896 | CRYPT Opener | WhatsApp Messenger Encrypted Message Database Backup |
| 897 | CRYPT10 Opener | WhatsApp Messenger Encrypted Message Database Backup Format |
| 898 | CRYPT11 Opener | WhatsApp Messenger Encrypted Message Database Backup Format |
| 899 | CRYPT12 Opener | WhatsApp Messenger Message Database Format |
| 900 | CRYPT5 Opener | WhatsApp Messenger Encrypted Message Database Backup |
| 901 | CRYPT6 Opener | WhatsApp Messenger Encrypted Message Database Backup |
| 902 | CRYPT7 Opener | WhatsApp Messenger Encrypted Message Database Backup |
| 903 | CRYPT8 Opener | WhatsApp Messenger Message Database Format |
| 904 | CRYPT9 Opener | WhatsApp Messenger Encrypted Message Database Backup Format |
| 905 | CRYPTED Opener | WinOptimizer Encrypted Format |
| 906 | CRYPTOMITE Opener | CryptoMite Encrypted Archive |
| 907 | CRYPTOWALL Opener | Encrypted Format By Cryptowall Ransomware Format |
| 908 | CRYPTRA Opener | Cryptra Encrypted Format |
| 909 | CRYPT_KEYSTORE Opener | BlackBerry 10 Data Format |
| 910 | CRYPZ Opener | CryptXXX Ransomware Affected Data Format |
| 911 | CRYSISJMSF Opener | Crysis Saved Game |
| 912 | CRYSISPSF Opener | Crysis Warhead Saved Game |
| 913 | CRZ Opener | Compressed Poser Character Rigging Format |
| 914 | CS Opener | Visual C# Source Code Format |
| 915 | CS1 Opener | Sinar CaptureShop |
| 916 | CS2 Opener | CyberStep2 |
| 917 | CS4 Opener | Sinar CaptureShop 4-shot Image |
| 918 | CS8 Opener | Unix Graphics Format |
| 919 | CS80V2 Opener | CS-80V Data Format |
| 920 | CSA Opener | PNA Code Calset Format |
| 921 | CSAC Opener | Web Research Collection Optimization Temporary |
| 922 | CSAPLAN Opener | SPSS Analysis Plan Format |
| 923 | CSASSEMBLY Opener | ICQ 6 |
| 924 | CSATTR Opener | Microsoft Visual Studio Attractor |
| 925 | CSB Opener | Corel PHOTO-PAINT Script |
| 926 | CSC Opener | 18 Wheels Of Steel: Pedal To The Metal Game |
| 927 | CSCFG Opener | Microsoft Visual Studio Cloud Configuration Format |
| 928 | CSCFT Opener | Colasoft Capsa Data Format |
| 929 | CSCNP Opener | Colasoft Capsa Network Profile Format |
| 930 | CSCONT Opener | Capsa Name Table Format |
| 931 | CSCPFLT Opener | Colasoft Capsa Project Filter Format |
| 932 | CSCPKT Opener | Sample Packet |
| 933 | CSCPRO Opener | Colasoft Capsa Protocol Format |
| 934 | CSCPROJ Opener | Colasoft Capsa Project Format |
| 935 | CSCTA Opener | Capsa Time Analyze Data Format |
| 936 | CSCTF Opener | Colasoft Capsa Data Format |
| 937 | CSD Opener | Compact Shared Document |
| 938 | CSDEF Opener | Microsoft Visual Studio Data Format |
| 939 | CSDL Opener | ADO.NET Metadata Format |
| 940 | CSDPROJ Opener | C# Device Project |
| 941 | CSE Opener | Web Research Document Package |
| 942 | CSF Opener | Content Sealed Format |
| 943 | CSGRAD Opener | Microsoft Visual Studio Gradients |
| 944 | CSH Opener | Photoshop Custom Shapes Format |
| 945 | CSHADER Opener | Microsoft Visual Studio Text Data Format |
| 946 | CSHP Opener | ESRI ArcView Shape Data Format |
| 947 | CSHRC Opener | UNIX Command |
| 948 | CSHTML Opener | ASP.NET Razor Web Page |
| 949 | CSI Opener | ContentServ Include Format |
| 950 | CSJ Opener | RIM CSJ Registration |
| 951 | CSK Opener | Claris Works |
| 952 | CSKIN Opener | CD Art Display Skin Format |
| 953 | CSL Opener | CineStyle Color Lookup Format |
| 954 | CSLOG Opener | CodeSite Log Format |
| 955 | CSM Opener | Character Studio Marker Format |
| 956 | CSMANIFEST Opener | ICQ 6 Settings |
| 957 | CSML Opener | Chemical Style Markup Language |
| 958 | CSN Opener | Adobe Code Snippet Document |
| 959 | CSO Opener | CISO Compressed ISO Format |
| 960 | CSOM Opener | Eudora For Mac |
| 961 | CSON Opener | CoffeeScript Object Notation Format |
| 962 | CSP Opener | CorelDRAW Service Bureau Profiler Format |
| 963 | CSPKG Opener | Microsoft Windows Azure Package Format |
| 964 | CSPL Opener | Firefox Data Format |
| 965 | CSPLAN Opener | SPSS Sampling Plan Format |
| 966 | CSPROJ Opener | Visual Studio C# Project |
| 967 | CSQ Opener | Microsoft FoxPro Queries |
| 968 | CSR Opener | Certificate Signing Request Format |
| 969 | CSS Opener | Cascading Style Sheet |
| 970 | CSS1 Opener | Cascading Style Sheet |
| 971 | CSSTORE Opener | Apple Mac OS X Cache |
| 972 | CST Opener | Manga Studio Story Format |
| 973 | CSU Opener | Creston 2 - Series Control Systems Update Data Format |
| 974 | CSV Opener | Comma Separated Values Format |
| 975 | CSVIEW Opener | Microsoft Visual Studio Views |
| 976 | CSVX Opener | XML CSV |
| 977 | CSW Opener | Corel WordPerfect Setup Information |
| 978 | CSX Opener | Visual C# Script |
| 979 | CSY Opener | Canvas Symbol Format |
| 980 | CSZ Opener | The Core Media Player Skin |
| 981 | CT Opener | IRIS CT Image Format |
| 982 | CT0 Opener | Tajima TBF Condition |
| 983 | CT1 Opener | SMS Proposed Site Control |
| 984 | CT2 Opener | CTRAN/W Graphical Layout Format |
| 985 | CT3 Opener | Casio WK-1800 Keyboard Users Tones Format |
| 986 | CT4IM Opener | CrazyTalk Data Format |
| 987 | CT7 Opener | CaseMap Case Analysis Template |
| 988 | CT8 Opener | CaseMap Case Template |
| 989 | CTA Opener | ColorTouch Assistant Settings |
| 990 | CTB Opener | AutoCAD Color-Based Plot Style Format |
| 991 | CTBL Opener | Xamine NSCL |
| 992 | CTBODYFITTING Opener | CrazyTalk Animator Actor Fitting Format |
| 993 | CTC Opener | SeeYou Flight Data |
| 994 | CTD Opener | Tomahawk Gold Compressed Tomahawk Document |
| 995 | CTE Opener | Classical Text Editor Document |
| 996 | CTF Opener | AVG Update Control Format |
| 997 | CTFSYS Opener | OS X Mach Kernel System |
| 998 | CTG Opener | BMC Software PATROL Format |
| 999 | CTI Opener | Collectorz.com Template Info |
| 1000 | CTIT Opener | RAR Archive |
| 1001 | CTK Opener | TeKton3D Project |
| 1002 | CTL Opener | Visual Basic UserControl Object Format |
| 1003 | CTM Opener | CrazyTalk Model Format |
| 1004 | CTMDPI Opener | MRMC Markov Reward Model Checker Matrix |
| 1005 | CTN Opener | Cadterns Sloper Format |
| 1006 | CTO Opener | Microsoft Visual Studio Binary Command Table Output |
| 1007 | CTP Opener | CakePHP Template |
| 1008 | CTPROJECT Opener | CrazyTalk Animator Project Format |
| 1009 | CTR Opener | BrainVoyager QX Contrast |
| 1010 | CTRL Opener | Oracle WebLogic Workshop Controls Format |
| 1011 | CTS Opener | CrazyTalk Script Format |
| 1012 | CTSYM Opener | Microsoft Visual Studio Command Table Output |
| 1013 | CTT Opener | Messenger Contact List |
| 1014 | CTV Opener | Citavi Project |
| 1015 | CTV3 Opener | Citavi 3 Project Format |
| 1016 | CTX Opener | Valve ICE Encoded Script |
| 1017 | CTXT Opener | BlueJ Context Format |
| 1018 | CTY Opener | SimCity City Format |
| 1019 | CTZ Opener | Custody Toolbox Compressed Backup |
| 1020 | CU Opener | CUDA Source Code Format |
| 1021 | CU1 Opener | Photoline 4 Curve |
| 1022 | CU3 Opener | Photoline Curves Clut |
| 1023 | CU? Opener | Photoline Clut |
| 1024 | CUB Opener | Analysis Services Cube Format |
| 1025 | CUBE Opener | Antaeus |
| 1026 | CUE Opener | Cue Sheet Format |
| 1027 | CUF Opener | Turbo C Utilities Form Definition |
| 1028 | CUH Opener | CUDA Header Format |
| 1029 | CUI Opener | Autodesk Custom Workspace Format |
| 1030 | CUIX Opener | AutoCAD Custom User Interface Format |
| 1031 | CUJ Opener | Personal Backup Data Format |
| 1032 | CUL Opener | Windows Cursor Library |
| 1033 | CUO Opener | CUDA Object Format |
| 1034 | CUP Opener | SeeYou Waypoint |
| 1035 | CUR Opener | Windows Cursor |
| 1036 | CURRENT Opener | WhatsApp Messenger Encrypted Message Database |
| 1037 | CURSEMOD Opener | Curse Client Mod |
| 1038 | CURSOR Opener | Sun Cursor |
| 1039 | CURSORFX Opener | CursorFX Theme Format |
| 1040 | CURXPTHEME Opener | CursorXP Theme Format |
| 1041 | CUS Opener | AutoCAD Custom Dictionary Format |
| 1042 | CUST Opener | QuarkXPress Mac Format Type |
| 1043 | CUSTOMDESTINATIONS-MS Opener | Microsoft Windows 7 Jump List |
| 1044 | CUT Opener | Dr. Halo Bitmap Image Format |
| 1045 | CUTECUTPROJECT Opener | Cute Cut Project |
| 1046 | CUV Opener | Origin Sample Curve |
| 1047 | CU_ Opener | Microsoft Windows Winhelp Compressed |
| 1048 | CV Opener | Microsoft CodeView Information Screen |
| 1049 | CV2 Opener | Adobe Audition Data Format |
| 1050 | CV5 Opener | Canvas 5 Drawing Format |
| 1051 | CVA Opener | HP Systems Software Manager Information Format |
| 1052 | CVC Opener | CVideo |
| 1053 | CVD Opener | ClamAV Virus Definitions Format |
| 1054 | CVF Opener | CPU-Z Validation Format |
| 1055 | CVG Opener | Calamus Vector Graphic Format |
| 1056 | CVI Opener | Canvas Image Format |
| 1057 | CVJ Opener | Cabinet Vision Solid Job Document Format |
| 1058 | CVL Opener | Coastal Vector Listing Format Format Format |
| 1059 | CVM Opener | Odin Sphere |
| 1060 | CVN Opener | CineVision Encoding Session |
| 1061 | CVP Opener | Portrait Image Format |
| 1062 | CVR Opener | Microsoft Crash Report Format |
| 1063 | CVS Opener | Canvas 3 Drawing Format |
| 1064 | CVSIGNORE Opener | Eclipse CVS Settings |
| 1065 | CVSRC Opener | TortoiseCVS CVS Command |
| 1066 | CVT Opener | Canvas External Tool Format |
| 1067 | CVW Opener | CaseView Document |
| 1068 | CVX Opener | Canvas Drawing Format |
| 1069 | CVZ Opener | Card Vault Inventory |
| 1070 | CW Opener | CardWorks Template |
| 1071 | CW1 Opener | Creeper World Game Map Format |
| 1072 | CW2 Opener | Creeper World 2 Game Map Format |
| 1073 | CW3 Opener | Claris Works Document |
| 1074 | CW7 Opener | COMPRESS Related |
| 1075 | CWB Opener | Cakewalk Bundle |
| 1076 | CWC Opener | CADfix Wizard Configuration |
| 1077 | CWD Opener | QNonograms Puzzle Format |
| 1078 | CWDB Opener | ClarisWorks Database |
| 1079 | CWF Opener | CorelDRAW Workspace Format |
| 1080 | CWG Opener | Castle Of The Winds Data Format |
| 1081 | CWGR Opener | ClarisWorks Drawing |
| 1082 | CWIE Opener | CodeWarrior |
| 1083 | CWK Opener | ClarisWorks Document |
| 1084 | CWKS Opener | ClarisWorks |
| 1085 | CWL Opener | ClarisWorks Library |
| 1086 | CWLINK Opener | CodeWarrior |
| 1087 | CWM Opener | WebSphere Map Designer Express Map Definition |
| 1088 | CWMS Opener | CompeGPS Land Remote Map |
| 1089 | CWP Opener | Cakewalk SONAR Project |
| 1090 | CWPT Opener | ClarisWorks Painting Drawing |
| 1091 | CWR Opener | Crystal Reports Report |
| 1092 | CWS Opener | Claris Works Template |
| 1093 | CWSS Opener | ClarisWorks Spreadsheet |
| 1094 | CWT Opener | ClarisWorks Texture Format |
| 1095 | CWW Opener | Crossword Weaver Puzzle Format |
| 1096 | CWWP Opener | ClarisWorks Document |
| 1097 | CWX Opener | Sonar Track Template |
| 1098 | CWY Opener | Songtrix Style Format |
| 1099 | CWZ Opener | Circuit Wizard Format |
| 1100 | CW_ Opener | CorelDRAW Workspace |
| 1101 | CX Opener | CodeMapper Script |
| 1102 | CX3 Opener | CMS Recorded Video Format |
| 1103 | CXA Opener | ANSYS Fluent Animation Metadata |
| 1104 | CXARCHIVE Opener | CrossOver Bottle |
| 1105 | CXB Opener | Custody X Change Data |
| 1106 | CXBML Opener | Business Process Modeler Model Format |
| 1107 | CXC Opener | Custody X Change Data Format |
| 1108 | CXD Opener | SimplePCI Data Document |
| 1109 | CXE Opener | Common XML Envelope |
| 1110 | CXF Opener | Picasa Collage Format |
| 1111 | CXL Opener | Business Integrator Extract Schema |
| 1112 | CXML Opener | Microsoft Silverlight Server Side Data |
| 1113 | CXP Opener | CX-Programmer Project Format |
| 1114 | CXQ Opener | SillyDl.CXQ Downloading Trojan |
| 1115 | CXR Opener | CX-Programmer Settings |
| 1116 | CXT Opener | Director Protected Cast Format |
| 1117 | CXV Opener | Custody X Change Data |
| 1118 | CXX Opener | C++ Source Code Format |
| 1119 | CYA Opener | Cyana Macro |
| 1120 | CYBERDUCKLICENSE Opener | Cyberduck Donation Key |
| 1121 | CYBERDUCKPROFILE Opener | Cyberduck Connection Profile |
| 1122 | CYI Opener | Clustify Input Format |
| 1123 | CYL Opener | Ribbons Cylinder |
| 1124 | CYO Opener | Clustify Output Format |
| 1125 | CYP Opener | Home Designer Pro Project Format |
| 1126 | CYR Opener | Crysis Level |
| 1127 | CYS Opener | Cytoscape Session Format |
| 1128 | CYT Opener | Yenka Simulation Data Format |
| 1129 | CYW Opener | Rbot.CYW Worm Format |
| 1130 | CZ Opener | Czech Language Translation |
| 1131 | CZD Opener | CAD Zone Drawing |
| 1132 | CZE Opener | Czech Language Localization Format |
| 1133 | CZI Opener | Carl Zeiss Image Data Format |
| 1134 | CZIP Opener | ZipGenius CryptoZip Format |
| 1135 | CZN Opener | RMCProfile Atom List |
| 1136 | CZP Opener | ClozePro Archive |
| 1137 | C_ Opener | Microsoft Winhelp Compressed |
| 1138 | C__ Opener | C++ Source Code |
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