| 1 | ABX | Corel Corporation | Corel WordPerfect Mail Address Book |
| 2 | ADE | Microsoft | Access Project Extension |
| 3 | ADP | Microsoft | Access Project |
| 4 | APP | Apple | Mac OS X Application |
| 5 | ASP | Microsoft | Active Server Page |
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| 6 | BAS | N/A | BASIC Source Code Format |
| 7 | BAT | Microsoft | Batch Format (executable) |
| 8 | CHM | Microsoft | Compiled HTML Help Format |
| 9 | CMD | Microsoft | Windows Command Format |
| 10 | CNT | Microsoft | Help Contents Format |
| 11 | COM | Microsoft | DOS Command Format |
| 12 | CRT | N/A | Security Certificate |
| 13 | DER | N/A | DER Certificate Format |
| 14 | EXE | Microsoft | Windows Executable Format |
| 15 | FXP | Microsoft | Visual FoxPro Compiled Database Format |
| 16 | GADGET | Microsoft | Windows Gadget |
| 17 | HPJ | Microsoft | Help Project Format |
| 18 | INF | N/A | Setup Information Format |
| 19 | ISP | Microsoft | IIS Internet Service Provider Settings |
| 20 | JS | N/A | JavaScript Format |
| 21 | JSE | Microsoft | JScript Encoded Format |
| 22 | KSH | N/A | Unix Korn Shell Script |
| 23 | LNK | Microsoft | Windows Format Shortcut |
| 24 | MAD | Microsoft | Access Module Shortcut |
| 25 | MAF | Microsoft | Microsoft Access Form Shortcut Format |
| 26 | MAM | Microsoft | Microsoft Access Macro |
| 27 | MAQ | Microsoft | Microsoft Access Query |
| 28 | MAR | Mozilla | Mozilla Archive |
| 29 | MAS | Microsoft | Microsoft Access Stored Procedures Format |
| 30 | MAT | Microsoft | Microsoft Access Table Shortcut Format |
| 31 | MAV | Microsoft | Access View Format |
| 32 | MAW | Microsoft | Access Data Access Page |
| 33 | MDA | Microsoft | Access Add-in |
| 34 | MDB | Microsoft | Microsoft Access Database |
| 35 | MDE | Microsoft | Compiled Access Add-in Format |
| 36 | MDT | Intergraph | GeoMedia Access Database Template |
| 37 | MDW | N/A | Access Workgroup Format |
| 38 | MDZ | N/A | Access Wizard Template |
| 39 | MSC | Microsoft | Microsoft Management Console Snap-in Control Format |
| 40 | MSH1XML | Microsoft | Monad Display Configuration File |
| 41 | MSH2 | N/A | Microsoft Shell script |
| 42 | MSH2XML | N/A | Windows PowerShell script |
| 43 | MSHXML | Microsoft Corporation | Microsoft XML Typedata |
| 44 | MSI | Microsoft | Windows Installer Package |
| 45 | MSP | Microsoft | Windows Installer Patch |
| 46 | MST | Microsoft | Windows Installer Setup Transform Format |
| 47 | OPS | Microsoft | Office Profile Settings Format |
| 48 | PIF | Microsoft & IBM | Program Information Format |
| 49 | PLG | Microsoft | Microsoft Developer Studio Build Log Format |
| 50 | PRG | N/A | Program Format |
| 51 | PS1 | Microsoft | Windows PowerShell Cmdlet Format |
| 52 | PS1XML | Microsoft | Windows PowerShell Display Configuration Format |
| 53 | PS2XML | Microsoft Corporation | Windows PowerShell |
| 54 | PSC1 | Microsoft | Windows PowerShell Console Format |
| 55 | PSC2 | Microsoft Corporation | Microsoft Windows PowerShell Script |
| 56 | REG | Microsoft | Registry Format |
| 57 | SCF | N/A | Windows Explorer Command |
| 58 | SCR | Microsoft | Windows Screensaver |
| 59 | SCT | Scitex | Scitex Continuous Tone Format |
| 60 | TMP | N/A | Temporary Format |
| 61 | URL | N/A | Internet Shortcut |
| 62 | VB | Microsoft | VBScript Format |
| 63 | VBE | Microsoft | VBScript Encoded Script Format |
| 64 | VBP | Microsoft | Visual Basic Project Format |
| 65 | VBS | Microsoft | VBScript Format |
| 66 | VSS | Microsoft | Visio Stencil Format |
| 67 | VST | Steinberg | VST Audio Plugin |
| 68 | VSW | Microsoft | Visio Workspace Format |
| 69 | WS | Microsoft | Windows Script |
| 70 | WSF | Microsoft | Windows Script Format |
| 71 | WSH | Microsoft | Windows Script Host Settings |
