# File Extensions
Browse file types with extensions beginning with a number or special character.
| Extension | File Type | Popularity |
|---|---|---|
| .!BT | BitTorrent Incomplete Download File | 3.8 |
| .!QB | qBittorrent Partial Download File | 3.1 |
| .!SYNC | BitTorrent Partially Synced File | 3.0 |
| .!UT | uTorrent Incomplete Download | 4.0 |
| .## | Encrypt Easy Encrypted File | 2.5 |
| .### | NewSoftwares Temporary File | 1.7 |
| .$$$ | Temporary File | 3.6 |
| .$01 | DOS Pipe File | 3.4 |
| .$DB | dBASE Temporary File | 3.6 |
| .$ER | GroupWise Database | 3.8 |
| .0 | Hacha Split File Segment | 3.5 |
| .0 | M3 DS Real Saved Game | 3.4 |
| .0 | Android CA Digital Certificate | 2.9 |
| .0 | Shared Library Link File | 3.8 |
| .0 | Incomplete Mario Kart Wii Course | 3.0 |
| .00 | The Ur-Quan Masters Saved Game Slot 0 File | 4.1 |
| .000 | Windows CE Installation Data File | 3.3 |
| .000 | Virtual CD Disc Image File | 3.0 |
| .000 | DoubleSpace Compressed File | 2.8 |
| .000 | Indexing Service Data File | 3.9 |
| .001 | Split Archive Part 1 | 4.0 |
| .001 | Norton Ghost Disk Backup | 3.4 |
| .001 | Snes9x Slot 2 Saved State | 3.0 |
| .001 | Multimedia Fusion Backup File | 3.3 |
| .001 | Fax File | 3.3 |
| .002 | Split Archive Part 2 | 3.9 |
| .003 | Split Archive Part 3 | 4.0 |
| .004 | Split Archive Part 4 | 3.5 |
| .007 | James Bond 007: Nightfire Game Asset File | 2.5 |
| .0ADSAVE | 0 A.D. Game Save File | 3.5 |
| .0CC | 0CC-FamiTracker Module | 3.6 |
| .0FOP | WWE 2K Entrance or Victory Animation File | 1.0 |
| .0XE | F-Secure Renamed Virus File | 4.2 |
| .1 | Unix Section 1 Manual Page | 3.7 |
| .113 | Iomega Disk Backup | 3.2 |
| .123 | Lotus 1-2-3 Spreadsheet | 3.8 |
| .123 | PCB123 Circuit Board Design | 3.6 |
| .123C | Autodesk 123C Drawing | 3.3 |
| .123D | Autodesk 123D Drawing | 3.7 |
| .123DX | 123D Design Model File | 3.9 |
| .12M | Lotus 1-2-3 SmartMaster File | 2.7 |
| .17T | 2017 StudioTax Return File | 2.8 |
| .1PE | TurboTax Form File | 3.5 |
| .1PH | TurboTax Data File | 3.3 |
| .1PUX | 1Password Unencrypted Export | 3.0 |
| .1SC | Bio-Rad Quantity One Gel Image | 3.5 |
| .1ST | Readme File | 3.5 |
| .1TE | 1tracker Music Engine | 1.0 |
| .1TI | 1tracker Instrument | 1.0 |
| .1TM | 1tracker Module | 2.5 |
| .2 | Unix Section 2 Manual Page | 2.3 |
| .208 | ASUS Notebook BIOS 208 Update File | 3.7 |
| .256 | Descent 2 Color Palette | 4.1 |
| .264 | Ripped Video Data File | 3.5 |
| .264 | IP/CCTV Video File | 3.6 |
| .2BP | Pocket PC Bitmap Image File | 3.8 |
| .2CH | Super Audio CD Two-Channel Audio | 3.2 |
| .2D | VersaCAD 2D Drawing File | 3.2 |
| .2FAS | 2FAS Token Backup | 3.0 |
| .2FS | Puppy Linux Save State File | 3.4 |
| .2MG | Apple IIGS Disk Image | 3.6 |
| .2SF | Nintendo DS Sound File | 4.0 |
| .2SFLIB | Nintendo DS Audio Library File | 3.2 |
| .3 | Unix Section 3 Manual Page | 3.2 |
| .323 | H.323 Internet Telephony File | 2.8 |
| .32X | Sega 32X ROM | 4.1 |
| .360 | 360desktop Panorama File | 3.0 |
| .386 | Windows Virtual Device Driver | 3.5 |
| .3D | Survex 3D Cavern File | 3.8 |
| .3D | Stereo CAD-3D Image File | 2.1 |
| .3D2 | Stereo CAD-3D 2.0 Image File | 4.1 |
| .3D4 | Stereo CAD-3D 2.0 Image File | 4.0 |
| .3DA | 3D Assembly File | 3.9 |
| .3DC | iGO 3D Building File | 3.5 |
| .3DC | RacerMate 3D Course File | 3.9 |
| .3DC | RoboCell Cell Setup File | 2.0 |
| .3DC | 3DCT 3D Image | 2.8 |
| .3DC | 3DCrafter Scene File | 2.6 |
| .3DD | ArcGlobe Document | 3.0 |
| .3DF | 3D Format | 3.3 |
| .3DL | LightConverse 3D Model File | 3.3 |
| .3DL | iGO Landmark File | 3.8 |
| .3DL | 3D Lookup Table File | 3.0 |
| .3DL | Sierra LandDesigner 3D File | 3.5 |
| .3DM | Rhino 3D Model | 3.8 |
| .3DMARK-RESULT | 3DMark Results File | 4.0 |
| .3DMDEF | 3DMark Definition File | 3.0 |
| .3DMF | QuickDraw 3D Metafile | 3.3 |
| .3DMK | 123D Make Project File | 3.0 |
| .3DON | Scrutinize 3D Mesh File | 1.8 |
| .3DP | 123D Catch Photo Scene Data File | 3.7 |
| .3DP | 3DMark2011 SE Project File | 3.8 |
| .3DR | 3DMark Results File | 3.6 |
| .3DR | 3D Rad Project File | 4.0 |
| .3DS | 3D Studio Scene | 4.1 |
| .3DS | Nintendo 3DS ROM | 4.1 |
| .3DSX | Nintendo 3DS Homebrew Launcher File | 4.2 |
| .3DT | 3D Topicscape File | 4.0 |
| .3DV | 3D VRML World | 2.0 |
| .3DW | 3D World Studio Environment | 2.5 |
| .3DW | Studio Store Visualizer 3D Environment File | 2.4 |
| .3DX | Rhino 3D Model File | 2.7 |
| .3DXML | Dassault Systemes 3D XML File | 4.0 |
| .3DZ | Easy 3D Creator Project | 3.0 |
| .3DZ | Nintendo 3DS ROM | 3.5 |
| .3FR | Hasselblad 3F RAW Image | 3.7 |
| .3FS | Puppy Linux Save State File | 3.6 |
| .3G2 | 3GPP2 Multimedia File | 3.5 |
| .3GA | 3GPP Audio File | 3.7 |
| .3GM | 3D Groove Model | 3.0 |
| .3GP | 3GPP Multimedia File | 3.8 |
| .3GP2 | 3GPP Multimedia File | 3.6 |
| .3GPA | 3GPP Multimedia File | 2.6 |
| .3GPP | 3GPP Media File | 3.3 |
| .3GPP2 | 3GPP2 Multimedia File | 3.3 |
| .3GX | Luma3DS 3GX Plug-in | 2.3 |
| .3ME | TurboTax Form File | 3.8 |
| .3MF | 3D Manufacturing File | 4.1 |
| .3MM | 3D Movie Maker Movie Project | 3.5 |
| .3P2 | 3GPP Multimedia File | 3.2 |
| .3PE | TurboTax Form | 3.0 |
| .3W | XYZprinting Sliced Model File | 3.1 |
| .4 | Unix Section 4 Manual Page | 3.1 |
| .411 | Mavica Thumbnail Image | 3.0 |
| .477 | MNS Shape Definition Companion File | 2.6 |
| .4DB | 4th Dimension Database Structure File | 3.7 |
| .4DD | 4th Dimension Database Data File | 3.5 |
| .4DL | 4th Dimension Database Log File | 3.8 |
| .4DV | 4D View Ultrasound File | 3.2 |
| .4FS | Puppy Linux Save State File | 3.4 |
| .4MP | 4-MP3 Database File | 3.9 |
| .4TH | Forth Language File | 2.8 |
| .4UI | ForeUI Plot File | 3.7 |
| .4XM | 4X Movie | 3.0 |
| .5 | Unix Section 5 Manual Page | 3.5 |
| .555 | Black & White Weather Settings File | 3.5 |
| .5VW | 5View Packet Capture File | 3.0 |
| .5XB | Line 6 POD HD500X Edit Bundle | 3.3 |
| .5XE | Line 6 POD HD500X Edit Preset File | 3.7 |
| .5XS | Line 6 POD HD500X Edit Setlist File | 2.7 |
| .6 | Unix Section 6 Manual Page | 3.0 |
| .602 | Text602 Document | 3.2 |
| .60D | CCTV Video Clip | 3.4 |
| .669 | UNIS Composer 669 Module | 3.5 |
| .68K | SEGA Mega Drive & Genesis Classics ROM File | 3.8 |
| .6CM | Six Channel Module | 3.5 |
| .7 | Unix Section 7 Manual Page | 2.0 |
| .73B | TI-73 Backup File | 3.0 |
| .73C | TI-73 Constant File | 1.3 |
| .73I | TI-73 Screenshot File | 3.9 |
| .73K | TI-73 Application | 3.9 |
| .73L | TI-73 Data List File | 1.8 |
| .73P | TI-73 Program | 1.5 |
| .73U | TI-73 Explorer Operating System File | 3.6 |
| .787 | AVTECH CCTV Video File | 3.3 |
| .7Z | 7-Zip Compressed File | 4.1 |
| .7Z.001 | 7-Zip Split Archive Part 1 File | 3.7 |
| .7Z.002 | 7-Zip Split Archive Part 2 File | 3.8 |
| .8 | Unix Section 8 Manual Page | 2.2 |
| .83P | TI-83 Calculator File | 3.5 |
| .86F | 86Box Floppy Disk Image | 3.0 |
| .890 | Cavena Subtitles File | 3.2 |
| .89K | TI-89 Application | 3.7 |
| .89U | TI-89 Titanium Operating System File | 3.3 |
| .89Z | TI-89 Program | 4.0 |
| .8BA | Photoshop Plug-in | 3.8 |
| .8BC | Photoshop 5.0 Plugin | 3.4 |
| .8BE | Photoshop Export Plugin | 3.7 |
| .8BF | Filter Factory Image Filter | 3.9 |
| .8BF | Photoshop Filter Plug-in | 3.8 |
| .8BI | Photoshop Plug-in | 4.0 |
| .8BI8 | Photoshop Plug-in | 3.6 |
| .8BL | Photoshop Plug-in | 3.7 |
| .8BS | Photoshop 5.0 Selection Plug-in | 3.4 |
| .8BX | PhotoDeluxe Plug-in | 3.5 |
| .8BY | Photoshop Parser Plugin | 3.3 |
| .8CA | TI-84 Plus C Image Var Format | 2.9 |
| .8CI | TI-84 Plus C Pic Vars Image | 4.3 |
| .8CK | TI-84 Plus C Silver Edition Application File | 4.1 |
| .8CM | Eight Channel Module | 3.3 |
| .8CU | TI-84 Plus C Operating System File | 3.2 |
| .8EU | TI-84 Plus CE Operating System | 2.0 |
| .8LD | Overlord 2 Language File | 4.2 |
| .8LI | Photoshop Scripting Plug-in | 3.6 |
| .8MED | Amiga OctaMED Music File | 2.8 |
| .8PBS | Adobe Photoshop Macintosh File | 3.7 |
| .8ST | 8start Launcher File | 2.5 |
| .8SVX | Amiga 8-Bit Sound File | 3.3 |
| .8XG | TI-83/84 Plus Group File | 2.5 |
| .8XI | TI-83/84 Plus Picture File | 2.7 |
| .8XK | TI-83 Plus Application Upgrade File | 2.9 |
| .8XP | TI-83 Plus Calculator File | 3.3 |
| .8XS | TI-83/84 Plus String File | 2.7 |
| .8XU | TI-83 and TI-84 Plus Operating System File | 3.3 |
| .8XV | TI-83/84 Plus Variable File | 3.1 |
| .9.PNG | NinePatchDrawable Image | 2.9 |
| .@@@ | MS-DOS 2.0 to 3.2x Backup Control File | 3.0 |
| .@EX | National Geographic Maps Map | 2.0 |
| .^^^ | Pervasive.SQL Database File | 2.8 |
| ._DOC | Renamed Microsoft Word Document | 3.0 |
| ._DOCX | Renamed Microsoft Word Document | 3.5 |
| ._EML | Windows Live Mail Email File | 4.1 |
| ._NWS | Windows Live Mail Newsgroup Copy File | 3.8 |
| ._PLAYMUSICID | Google Play Music ID File | 3.7 |
| ._SYS.LFO | Adware File | 3.0 |
| ._XLS | Renamed Microsoft Excel Spreadsheet (Legacy) | 3.2 |
| ._XLSX | Renamed Microsoft Excel Spreadsheet | 3.3 |
| .__A | File Splitter & Joiner Encrypted File | 3.8 |
| .__B | File Splitter & Joiner Encrypted Archive File | 2.5 |
| .{PB | Corel WordPerfect Document Index File | 2.7 |
| .~ | Yandex Partially Downloaded File | 2.0 |
| .~CW | Circuit Wizard Backup File | 2.4 |
| .~HM | HostMonitor TestList Backup File | 2.8 |
