| File Extension | Type |
|---|
| .APK | Android Package File |
| .AJAX | Web File |
| .BKF | Backup File |
| .CRDOWNLOAD | Temporary File Type |
| .CRT | Certificate File |
| .CSS | Cascading Style Sheet |
| .CSV | Comma-Separated Variables |
| .DMG | Disk Image File |
| .DLL | Dynamic Link Library |
| .DWG | Drawing Database File |
| .EDB | Exchange Database File |
| .EML | E-Mail Message File |
| .Gadget | Windows Sidebar Gadgets
|
| .HTML | Hyper Text Markup Language |
| .ICS | iCalender/Sony IC Recorder sound file/IronCAD 3D CAD file |
| .JS | Java Script |
| .MDF | SQL Database File/Media Disc Image File/Measurement Data Format File/Translation Memory Data Find File |
| .MSG | Outlook Mail Message |
| .MBOX | E-mail Mailbox File
|
| .MAB | Mozilla Address Book)/Markaby script file |
| .MSF | Mozilla Thunderbird mail summary file/Epson file/Miranda IM skin settings file/Multiple sequence file/Blue Card Manager Merit Badge Mastersheet File |
| .NSF | Lotus Notes database file/NES sound file/Sunstar embroidery stitch file |
| .NDF | Microsoft SQL Server secondary data file/NimbleScan NimbleGen design file/ProWORX NXT short comment file/NeoPlanet Browser file |
| .OST | Email and Database File |
| .OFT | Outlook Template File |
| .PST | Personal Storage Table
|
| .PDF | Document Files |
| .PPT | PowerPoint Data File |
| .PY | Python Programming Language
|
| .PHP | WEB File |
| .PART | Partial Download File |
| .RAR | Archived and Compressed File |
| .RB | Rubby Programming Language |
| .SHS | Python Programming Language
|
| .SRT | Subtitle Text File
|
| .SWF | Video Files |
| .VCF | vCard File (Electronic Business Card)/VPHybridCAD native drawing format/VirtualDub processing settings file |
| .VHD | Virtual Hard Disk File/Quartus II VHDL Design File |
| .XML | Markup Language
|