| 1 | AAE | Apple | Sidecar Image Edit File |
| 2 | ACB | Adobe Systems | Adobe Photoshop Color Book Format |
| 3 | ACCDU | Microsoft | Access Add-in Format |
| 4 | ACCFL | Microsoft Corporation | Microsoft Access Field Template |
| 5 | ACROTHEME | N/A | Adobe Acrobat theme |
|
| 6 | ACT | N/A | ADPCM Compressed Audio Format |
| 7 | ACTIONSCRIPTPROPERTIES | Adobe Systems Incorporated | Adobe Flex Settings |
| 8 | ACV | Adobe Systems | Photoshop Curves Format |
| 9 | ADML | Microsoft | Microsoft Administrative Language-specific XML Template Format |
| 10 | ADMX | Microsoft | Group Policy Administrative Template Format |
| 11 | ADO | Adobe Systems | Adobe Photoshop Duotone Options Format |
| 12 | ADR | N/A | Opera Bookmarks Format |
| 13 | AES | Packetizer | AES Crypt Encrypted Format |
| 14 | AET | Adobe Systems | After Effects Project Template |
| 15 | AFPLOC | Apple | Apple Filing Protocol Location |
| 16 | AGTEMPLATE | Adobe Systems Incorporated | Adobe Photoshop Lightroom Preset |
| 17 | AHS | Adobe Systems | Adobe Halftone Screen Format |
| 18 | ALL | Steinberg | Cubasis Project Format |
| 19 | ALX | Microsoft | ActiveX Layout Control Format |
| 20 | AMP | Adobe Systems | Adobe Photoshop Curves Map Format |
| 21 | AOM | Adobe Systems | Adobe After Effects Output Settings Format |
| 22 | APPCONTENT-MS | Microsoft | Application Content File |
| 23 | APXL | Apple | Keynote Presentation Data Format |
| 24 | ARS | Adobe Systems | After Effects Render Settings Format |
| 25 | ARV | Microsoft Corporation | Microsoft Autoroute User Information |
| 26 | ASEF | Adobe Systems Incorporated | Adobe Swatch Exchange |
| 27 | AST | Adobe Systems | Adobe Color Separations Table |
| 28 | ASV | Adobe Systems | Adobe Photoshop Selective Color Format |
| 29 | ATC | Autodesk | AutoCAD Catalog Format |
| 30 | ATF | Molecular Devices | Axon Text Format |
| 31 | ATN | Adobe Systems | Photoshop Actions Format |
| 32 | AWE | Adobe Systems Incorporated | Adobe Acrobat Bookmark XML |
| 33 | AXT | Adobe Systems | Adobe Photoshop Extract Format |
| 34 | BASECONFIG | Apple, Inc. | AirPort Utility Setting |
| 35 | BASHRC | The GNU Project | Bash Non-Interactive Login Shell Format |
| 36 | BASH_LOGIN | GNU Project | Unix Shell Script (bash) |
| 37 | BASH_LOGOUT | GNU Project | Unix Shell Script (bash) |
| 38 | BROWSER | Microsoft | ASP.NET Browser Definition Format |
| 39 | BRPX | Rick Meyers | E-sword Bible Reading Plan |
| 40 | BSCOMP | N/A | Bootstrap component |
| 41 | BTSEARCH | BitTorrent | BitTorrent Search Engine Format |
| 42 | CANNEDSEARCH | Apple, Inc. | Apple Mac OS X Finder Predefined Search |
| 43 | CCD | SlySoft | CloneCD Disc Image |
| 44 | CIP | Cavena | CryptoBuddy Encrypted Format |
| 45 | CLSID | N/A | Generic |
| 46 | CM0013 | Samsung | Samsung Smart TV Index File |
| 47 | CM2 | Smith Micro | Poser Camera Set Format |
| 48 | CMB | Jeffrey C Johnson (XTree Company) | Xtree For Windows Button Bar |
| 49 | CMZ | Smith Micro | Compressed Poser Camera Set Format |
| 50 | CNF | MySQL | MySQL Configuration Format |
| 51 | COD | N/A | Compiled Source Code |
| 52 | COL | Phase One | Capture One Session Format |
| 53 | CONFIGURE | The Open Group | Bash |
| 54 | CONTACT | Microsoft | Windows Contact File |
| 55 | CONTAINER | N/A | Eclipse project settings |
| 56 | CSASSEMBLY | ICQ LLC | ICQ 6 |
| 57 | CSF | Informative Graphics | Content Sealed Format |
| 58 | CSMANIFEST | ICQ LLC | ICQ 6 Settings |
| 59 | CSW | Corel Corporation | Corel WordPerfect Setup Information |
| 60 | CUE | N/A | Cue Sheet Format |
| 61 | CUI | Autodesk | Autodesk Custom Workspace Format |
| 62 | CUSTOMDESTINATIONS-MS | Microsoft Corporation | Microsoft Windows 7 Jump List |
| 63 | CVA | Hewlett-Packard | HP Systems Software Manager Information Format |
| 64 | CW_ | Corel Corporation | CorelDRAW Workspace |
| 65 | CZ | N/A | Czech Language Translation |
| 66 | CZE | N/A | Czech language localization |
| 67 | DCPR | Adobe Systems | Adobe DNG Camera Profile Recipe Format |
| 68 | DEFINITION | Apple, Inc. | Apple Mac OS X Automator Data Type Definition |
| 69 | DESKTHEMEPACK | Microsoft | Windows 8 Desktop Theme Pack Format |
| 70 | DEVICEIDS | Apple | Device Identification FIle |
| 71 | DF | Corel Corporation | Corel Paradox Table Filter |
| 72 | DFN | N/A | Delphi Definition |
| 73 | DFX | Autodesk | Drafix CAD Format |
| 74 | DML | Dynascript Technologies | DynaScript Format |
| 75 | DMV | Adobe Systems Incorporated | Adobe Acrobat Catalog |
| 76 | DNP | N/A | DRM Digital Rights Management |
| 77 | DOLPHINVIEW | Dolphin | Dolphin Folder View Settings Format |
| 78 | DSN | Cadence Design Systems | Database Source Name Format |
| 79 | DSW | Microsoft | Visual C++ 6 Workspace Format |
| 80 | EAP | N/A | Adobe Photoshop Exposure Format |
| 81 | EDR | BALARAD, s.r.o. | Embird Color Palette |
| 82 | EEB | Corel Corporation | Corel WordPerfect Equation Editor Button Bar |
| 83 | EN | N/A | Generic |
| 84 | ENG | N/A | English Language Localization Format |
| 85 | EQF | Nullsoft | Winamp Equalizer Preset Format |
| 86 | EXPORTEDUI | Microsoft Corporation | Microsoft Office Import Customization |
| 87 | F4M | Adobe Systems Incorporated | Adobe HTTP Dynamic Streaming Flash Media Manifest |
| 88 | FAT | The Zinf Team | Zinf Theme Format |
| 89 | FAV | Microsoft Corporation | Microsoft Outlook Bar-shortcut |
| 90 | FDOC | Microsoft Corporation | Microsoft XPS Document Settings |
| 91 | FDRP | Apple, Inc. | Apple Mac OS Folder Alias |
| 92 | FEB | Corel Corporation | Corel WordPerfect Figure Editor Button Bar |
| 93 | FEQ | N/A | SuperEQ equalizer settings |
| 94 | FEV | Firelight Technologies | FMOD Audio Events Format |
| 95 | FFPRESET | N/A | FFmpeg Preset |
| 96 | FIG | Xfig | Xfig Drawing |
| 97 | FND | Microsoft | Windows Saved Search |
| 98 | FNS | Apple, Inc. | Apple FontSyncScripting Font Profile |
| 99 | FOL | SoftKey | PFS First Choice Database Format |
| 100 | FPM | The Game Creators | FPS Creator Map Format |
| 101 | FRAG | Microsoft Corporation | Microsoft XPS Document Fragment |
| 102 | FUL | Microsoft | Microsoft Backup Format List |
| 103 | GEMSPEC | RubyGems | Gem Specification Format |
| 104 | GITATTRIBUTES | Scott Chacon | Pro Git Attribute |
| 105 | GITIGNORE | Git | Git Ignore Format |
| 106 | GMANIFEST | Google Inc. | Google Desktop Gadget Control |
| 107 | GMW | Global Mapper Software LLC | Global Mapper Workspace |
| 108 | GRS | Headlight Software, Inc. | GetRight Skin |
| 109 | HDT | Adobe Systems | Photoshop HDR Toning Preset Format |
| 110 | HTGROUP | Apache Software Foundation | Apache Server User Group |
| 111 | HTPASSWD | N/A | Apache HTACCESS Format |
| 112 | HTPL | IBM | IBM Rational Application Developer WebContent Theme |
| 113 | HVD | Thibaun Dijan | HoverDesk Theme |
| 114 | HWT | N/A | Huawei Ascend P6 Emotion UI Theme |
| 115 | HXW | Microsoft Corporation | Microsoft Help Attribute Definition |
| 116 | IAF | Microsoft | Outlook Internet Account Format |
| 117 | ICC | International Color Consortium | ICC Profile |
| 118 | ICM | N/A | Image Color Matching Profile |
| 119 | ICS | Internet Engineering Task Force | ICalendar Format |
| 120 | IFO | N/A | DVD-Video Disc Information Format |
| 121 | IFT | N/A | Canon Settings |
| 122 | INETLOC | N/A | Internet Location |
| 123 | INSS | Apple, Inc. | Apple Mac OS X Setup Assistant ISP Info Document |
| 124 | INTERNETCONNECT | Apple | Apple Internet Connect Document |
| 125 | IPCC | Apple | IPhone Carrier Bundle |
| 126 | IPTHEME | Stardock | IconPackager Raw Theme Format |
| 127 | IPZ | ICQ LLC | ICQ Plus Skin |
| 128 | IROS | Adobe Systems | Adobe Save For Web Settings Format |
| 129 | IRS | Adobe Systems | Adobe Save For Web Settings |
| 130 | ISP | Microsoft | IIS Internet Service Provider Settings |
| 131 | ITA | Joost Verburg | IconTweaker Theme Archive |
| 132 | ITMS | Apple | ITunes Music Store Link Format |
| 133 | ITPC | Apple | ITunes Podcast Link Format |
| 134 | JBEAM | N/A | BeamNG Vehicle Definition Format |
| 135 | JNLP | Oracle | Java Web Start Format |
| 136 | JOBOPTIONS | Adobe Systems | Adobe Joboptions Format |
| 137 | JSM | Freedom Scientific, Inc. | JAWS Script Message |
| 138 | KFL | Microsoft Corporation | Microsoft Outlook 2007/2010 RSS Feed List |
| 139 | KFP | N/A | Generic |
| 140 | KPL | Pandora TV Co., Ltd. | KMPlayer Playlist Format |
| 141 | KYS | Adobe Systems | Adobe Photoshop Keyboard Shortcuts Format |
| 142 | LANG | Skype Software | Skype Language Settings Format |
| 143 | LAYOUT | Apple | Apple MainStage Layout Format |
| 144 | LCPP | N/A | Adobe Lens Profile Creator project |
| 145 | LIBRARY-MS | Microsoft | Windows Library Description Format |
| 146 | LNK | Microsoft | Windows Format Shortcut |
| 147 | LNS | AVG Technologies (Grisoft) | AVG Anti-Virus Language |
| 148 | LOB | IBM | IBM DB2 LOBFILE |
| 149 | LOCALSTORAGE | The WebKit Open Source Project | WebKit Local Storage Data Format |
| 150 | M3U | Nullsoft | Media Playlist Format |
| 151 | M3U8 | Apple | UTF-8 M3U Playlist Format |
| 152 | M3URL | N/A | SMIL MP3 Playlist |
| 153 | MAD | Microsoft | Access Module Shortcut |
| 154 | MAILHOST | Microsoft | MSN Mailhost Settings Format |
| 155 | MAM | Microsoft | Microsoft Access Macro |
| 156 | MAQ | Microsoft | Microsoft Access Query |
| 157 | MAR | Mozilla | Mozilla Archive |
| 158 | MAT | Microsoft | Microsoft Access Table Shortcut Format |
| 159 | MAXFR | N/A | Generic |
| 160 | MCL | Microsoft | Windows Media Center Link Format |
| 161 | METADATA_NEVER_INDEX | Apple | Spotlight Never Index Format |
| 162 | MFIL | Blizzard Entertainment | Blizzard Software Update Format |
| 163 | MFX | Clickteam | Multimedia Fusion Extension |
| 164 | MIRO | N/A | Generic |
| 165 | MKP | N/A | Cinestar Remote Control Configuration |
| 166 | MKT | Microsoft Corporation | Visual FoxPro Configuration |
| 167 | MNO | Adobe Systems | Macromedia Design Note |
| 168 | MOGRT | Adobe Systems | Adobe Motion Graphics Template |
| 169 | MPL | Sony | AVCHD Playlist Format |
| 170 | MRK | N/A | DPOF Auto Print Order Format |
| 171 | MSHA | Microsoft | Microsoft Help Asset Format |
| 172 | MSKIN | Maxthon International Limited | Maxthon Skin |
| 173 | MTZ | MIUI | MIUI Theme |
| 174 | MU | Corel Corporation | Corel Quattro Pro For DOS Menu Definition Format |
| 175 | NAPT | N/A | Navicat Premium data transfer profile |
| 176 | NCLR | Nintendo | Nintendo DS Color Palette Format |
| 177 | NETWORKCONNECT | Apple | Apple Network Connect Document |
| 178 | NHN | ijji Games LLC | Ijji REACTOR Html Launch |
| 179 | NICK | Microsoft | Outlook 2000 Nickname Format |
| 180 | NK2 | Microsoft | Outlook 2002 Nickname Format |
| 181 | NLPD | PremiumSoft CyberTech Ltd. | Navicat For SQLite Data Synchronization Profile |
| 182 | NLPEQ | PremiumSoft CyberTech Ltd. | Navicat For SQLite Export Query Result Profile |
| 183 | NLPEV | PremiumSoft CyberTech Ltd. | Navicat Export View Result Profile |
| 184 | NLPI | PremiumSoft CyberTech Ltd. | Navicat For SQLite Import Wizard Profile |
| 185 | NLPT | PremiumSoft CyberTech Ltd. | Navicat For SQLite Data Transfer Profile |
| 186 | NMPD | N/A | Navicat for MariaDB data synchronization file |
| 187 | NMPE | N/A | Navicat for MariaDB export wizard profile |
| 188 | NMPEQ | N/A | Navicat for MariaDB export query result profile |
| 189 | NMPEV | N/A | Navicat for MariaDB export view result profile |
| 190 | NMPS | N/A | Navicat for MariaDB structure synchronization |
| 191 | NMPT | N/A | Navicat for MariaDB data transfer |
| 192 | NOINDEX | Apple, Inc. | Mac OS X Spotlight Index |
| 193 | NOPEM | PremiumSoft CyberTech Ltd. | Navicat For Oracle Export Materialized View Profile |
| 194 | NOPEQ | PremiumSoft CyberTech Ltd. | Navicat For Oracle Export Query Result Profile |
| 195 | NOPEV | PremiumSoft CyberTech Ltd. | Navicat For Oracle Export View Result Profile |
| 196 | NOPI | PremiumSoft CyberTech Ltd. | Navicat For Oracle Import Wizard Profile |
| 197 | NOR | N/A | Norwegian Localization |
| 198 | NP2 | N/A | Generic |
| 199 | NPD | PremiumSoft CyberTech Ltd. | Navicat For MySQL Data Synchronize Profile |
| 200 | NPEQ | PremiumSoft CyberTech Ltd. | Navicat For MySQL Export Query Result Profile |
| 201 | NPEV | PremiumSoft CyberTech Ltd. | Navicat For MySQL Export View Result Profile |
| 202 | NPPD | PremiumSoft CyberTech Ltd. | Navicat For PostgreSQL Data Synchronization Profile |
| 203 | NPPEQ | PremiumSoft CyberTech Ltd. | Navicat For PostgreSQL Export Query Result Profile |
| 204 | NPPEV | PremiumSoft CyberTech Ltd. | Navicat For PostgreSQL Export View Result Profile |
| 205 | NPPI | PremiumSoft CyberTech Ltd. | Navicat For PostgreSQL Import Wizard Profile |
| 206 | NPPT | PremiumSoft CyberTech Ltd. | Navicat For PostgreSQL Data Transfer Profile |
| 207 | NPT | N/A | Navicat For MySQL Data Transfer Profile Format |
| 208 | NRA | Nero | Nero Audio Compilation |
| 209 | NSPD | PremiumSoft CyberTech Ltd. | Navicat For SQL Server Data Synchronization Profile |
| 210 | NSPEQ | PremiumSoft CyberTech Ltd. | Navicat For SQL Server Export Query Result Profile |
| 211 | NSPEV | PremiumSoft CyberTech Ltd. | Navicat For SQL Server Export View Result Profile |
| 212 | NSPI | PremiumSoft CyberTech Ltd. | Navicat For SQL Server Import Wizard Profile |
| 213 | NSPT | PremiumSoft CyberTech Ltd. | Navicat For SQL Server Data Transfer Profile |
| 214 | NTH | Nokia | Nokia Series 40 Theme Format |
| 215 | NUSPEC | NuGet | NuGet Specification Format |
| 216 | OAB | N/A | Offline Address Book |
| 217 | OBI | Microsoft | Outlook RSS Subscription Format |
| 218 | OEACCOUNT | Microsoft | Windows Mail Account Format |
| 219 | OLK14MAILACCOUNT | Microsoft | Outlook Mail Account Format |
| 220 | OLK14PREF | Microsoft | Outlook Preferences Format |
| 221 | OLK14RULE | Microsoft Corporation | Microsoft Outlook 2011 For Mac Rule |
| 222 | OPAL | Microsoft Corporation | Microsoft Office Customization Tool (OCT) Language-specific Settings |
| 223 | OPAX | Microsoft Corporation | Microsoft Office Customization Tool (OCT) Standard Settings |
| 224 | OPS | Microsoft | Office Profile Settings Format |
| 225 | OSDX | Microsoft | Search Connector Description Format |
| 226 | P3R | Adobe Systems | Adobe Photoshop Render Settings Preset Format |
| 227 | PCAST | Apple | ITunes Podcast Format |
| 228 | PKS | Oracle | Oracle Package Spec Format |
| 229 | PLIST | Apple | Mac OS X Property List Format |
| 230 | PLS | N/A | Audio Playlist |
| 231 | PLSX | N/A | Xtreamer Internet Radio Playlist |
| 232 | PMC | Microsoft | Performance Monitor Counter Format |
| 233 | POLICY | Oracle Corporation | Java Policy |
| 234 | POW | Microsoft Corporation | Microsoft Windows XP Power Schema |
| 235 | PPML | N/A | Personalized Print Markup Language |
| 236 | PREFS | VectorStorm | MMORPG Tycoon Preferences Format |
| 237 | PRF | Microsoft | Preferences Or Profile Format |
| 238 | PRFPSET | Adobe Systems | Premiere Pro Effect Preset Format |
| 239 | PRO | Adobe Systems | Profile Format |
| 240 | PROJECT | Eclipse | Eclipse Project Settings Format |
| 241 | PROP | Electronic Arts, Inc. | Spore Property |
| 242 | PROPERTIES | Sun Microsystems | Java Properties Format |
| 243 | PRST | Adobe Systems | Adobe InDesign Printer Presets Format |
| 244 | QBD | Intuit Inc. | Quicken Keyboard Layout |
| 245 | QSK | Quinnware | Quintessential Player Skin |
| 246 | REF | Microsoft | Microsoft Train Simulator Reference Format |
| 247 | REPATCH | Propellerhead Software AB | Reason DCAM EnvShaper Effect Preset |
| 248 | RESMONCFG | Microsoft | Resource Monitor Configuration Format |
| 249 | RESW | Microsoft | Windows Resources Format |
| 250 | RESX | Microsoft | .NET Managed Resources Format |
| 251 | RJS | RealNetworks | Ruby Javascript Format |
| 252 | RSP | Microsoft | Linker Response Format |
| 253 | RTC | Autodesk | AutoCAD Civil Rating Curve Data Format |
| 254 | RUL | Flexera Software | InstallShield Rules Format |
| 255 | RWZ | Microsoft | Outlook Rules Wizard Format |
| 256 | RXML | Roxen Internet Software AB | Roxen Macro Language |
| 257 | S1P | N/A | Touchstone 1 S-parameter Data |
| 258 | SER | Applied Biosystems | GeneMapper Project Format |
| 259 | SKIN | Microsoft | ASP.NET Skin Format |
| 260 | SKN | Nokia | Symbian OS Skin Format |
| 261 | SLN | Microsoft | Visual Studio Solution Format |
| 262 | SLS | N/A | Image Playlist |
| 263 | SLT | Mozilla | Mozilla User Profile Folder |
| 264 | SOE | LucasArts Entertainment Company, LLC | Star Wars Shadows Of The Empire |
| 265 | SPN | Corel Corporation | Corel WordPerfect Distribution |
| 266 | SRS | Microsoft | Outlook Send/Receive Settings Format |
| 267 | SSS | Stardock | WindowBlinds Substyle Format |
| 268 | STE | Adobe Systems | Dreamweaver Site Settings Format |
| 269 | STF | Microsoft | Microsoft ACME Setup Table Format |
| 270 | STRM | Plex Media Center Team | Plex Media Server Settings |
| 271 | STRUCT | Microsoft Corporation | Microsoft XPS Document Structure |
| 272 | SUITE | Stardock Corporation | Stardock WinStyles Suite |
| 273 | SV2I | Symantec | Symantec System Index Format |
| 274 | SVC | Microsoft | WCF Web Service Format |
| 275 | SWIDTAG | N/A | Software Identification Tag |
| 276 | SYMLINK | N/A | Symbolic link |
| 277 | TBR | JustSystems Corp. | SoftQuad XMetaL Configuration |
| 278 | TERMINAL | Apple | Terminal Settings Format |
| 279 | TEXTMATE_INIT | GNU Project | Unix Shell Script (bash) |
| 280 | THEMEPACK | Microsoft | Windows 7 Theme Pack |
| 281 | THM | Sony Ericsson | Thumbnail Image Format |
| 282 | THMX | Microsoft | Office 2007 Theme Format |
| 283 | TIS | Acronis | TruKnox Captured Device Settings Format |
| 284 | TMLANGUAGE | MacroMates | TextMate Language Grammar Format |
| 285 | TMPREFERENCES | MacroMates Ltd. | TextMate Preference |
| 286 | TSI | Native Instruments | Traktor Settings Format |
| 287 | TV | Corel Corporation | Corel Paradox Table View Settings |
| 288 | TWAIN | Adobe Systems Incorporated | Adobe Acrobat TWAIN 1.8 Specification |
| 289 | UDCX | Microsoft | Universal Data Connection Format |
| 290 | UDL | Microsoft | Microsoft Universal Data Link Format |
| 291 | UI | Nokia | User Interface Format |
| 292 | UIS | Stardock | WindowBlinds User Interface Specification |
| 293 | USER | Microsoft | Visual Studio Project User Options Format |
| 294 | USERSETTINGS | N/A | User settings |
| 295 | USR | FileMaker | FileMaker Pro Database Format |
| 296 | VCP | Microsoft | EMbedded Visual C++ Project Format |
| 297 | VCRD | Microsoft | Windows Vault Credentials Format |
| 298 | VCW | Microsoft | EMbedded Visual C++ Workspace Format |
| 299 | VNC | N/A | VNC Configuration Format |
| 300 | VPR | Adobe Systems Incorporated | Adobe Premiere Preset |
| 301 | VRGE08CONTACT | Microsoft Corporation | Microsoft Entourage 2008 Contact |
| 302 | VSCH | Microsoft | Windows Vault Schema Format |
| 303 | VSTDIR | Microsoft Corporation | Microsoft Visual Studio Project Type Settings |
| 304 | WAB | Microsoft | Windows Address Book |
| 305 | WAX | Microsoft | Windows Media Audio Redirect |
| 306 | WBA | Stardock | WindowBlinds Compressed Skin |
| 307 | WEBSETTINGS | N/A | JEE2 Web Project Settings |
| 308 | WFX | Symantec Corporation | WinFax |
| 309 | WMX | Microsoft | Windows Media Redirector Format |
| 310 | WORKSPACE | Adobe | Adobe Applications Workspace Setting |
| 311 | WPP | Corel Corporation | Corel WordPerfect Color Palette Format |
| 312 | WPSS | N/A | IBM WebSphere Server settings |
| 313 | WSK | Ashampoo GmbH & Co. KG | Whisset Media Player Skin |
| 314 | WSP | Microsoft | SharePoint Solution Package |
| 315 | WVX | Microsoft | Windows Media Video Redirector |
| 316 | WWB | Corel Corporation | Corel WordPerfect Button Bar |
| 317 | WWK | Corel Corporation | Corel WordPerfect Keyboard Layout |
| 318 | WZTHEME | N/A | Generic |
| 319 | XCCONFIG | Apple, Inc. | Apple Xcode Configuration Settings |
| 320 | XDC | TOTALCMD | Total Commander With DarkCrypt IV Plug-in Encrypted |
| 321 | XEJ | Microsoft | Expression Encoder Job Format |
| 322 | XFP | Microsoft Corporation | Microsoft SharePoint Extending Form Library Properties |
| 323 | XLB | Microsoft | Excel Toolbars Format |
| 324 | XLB4 | Microsoft Corporation | Microsoft Excel 4 For Mac Toolbars |
| 325 | XLB5 | Microsoft Corporation | Microsoft Excel 5 For Mac Toolbars |
| 326 | XLB8 | Microsoft Corporation | Microsoft Excel 98 For Mac Toolbars |
| 327 | XLBN | Microsoft Corporation | Microsoft Excel 1 For Mac Toolbars |
| 328 | XLPF | Microsoft Corporation | Microsoft Excel For Mac Setting |
| 329 | XLW | Microsoft | Excel Workspace Format |
| 330 | XSPF | N/A | XSPF Playlist Format |
| 331 | XST | Microsoft | Microsoft Outlook Personal Folders Format |
| 332 | XTD | N/A | XML Type Definition |
| 333 | XUR | Microsoft | Xbox 360 Binary User Interface Format |
| 334 | YEL | N/A | Yellow Color Separation |
| 335 | ZAP | Microsoft | Zero Administration Package Format |
| 336 | ZDCT | Adobe Systems | Adobe Language Format |
| 337 | ZPL | Microsoft | Zune Playlist |
| 338 | _PLAYMUSICID | Google Inc. | Android Google Play Music Id |
