| 1 | $MSF | Adobe Systems Incorporated | Adobe Configuration |
| 2 | AVGCONFIG | N/A | AVG Antivirus configuration |
| 3 | BAU | Sun Microsystems | Apache OpenOffice AutoText Format |
| 4 | CEID | N/A | Seagate Dockstar configuration |
| 5 | CEKEY | N/A | McAfee VirusScan configuration |
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| 6 | CF | N/A | Sendmail Configuration Format |
| 7 | CFG | N/A | Configuration Format |
| 8 | CNF | MySQL | MySQL Configuration Format |
| 9 | CNN | N/A | ADO-network Connection Configuration |
| 10 | CONF | N/A | Configuration Information Format |
| 11 | DEVICEMETADATA-MS | Microsoft Corporation | Microsoft Windows 7 Device Metadata Package |
| 12 | DIAGCFG | Microsoft | Troubleshooting Pack Configuration Format |
| 13 | DTSCONFIG | Microsoft Corporation | Microsoft SQL Server Integration Services Configuration |
| 14 | DUN | Trendy Entertainment | Dungeon Defenders Saved Game Format |
| 15 | EVM | Microsoft Corporation | Windows Vista Session Configuration |
| 16 | FP | OpenGL | Fragment Program Format |
| 17 | FPW | Microsoft Corporation | FoxPro Configuration |
| 18 | FTP | OpenSight Software | FTP Configuration |
| 19 | HCR | HydroCad Software Solutions | HydroCAD Rainfall Curve Data Format |
| 20 | HELPCFG | Adobe Systems Incorporated | Adobe AIR Help Configuration |
| 21 | HTACCESS | N/A | Apache HTACCESS Format |
| 22 | ICA | Citrix | Citrix ICA Format |
| 23 | ICTE | Apple, Inc. | Apple Mac Internet Configuration |
| 24 | INI | N/A | Windows Initialization Format |
| 25 | INI2 | N/A | Text Configuration |
| 26 | INUSE | N/A | Text Configuration Format (in Use) |
| 27 | JSC | N/A | JavaScript Config |
| 28 | LAUNCH | Zend Technologies Ltd. | Zend Studio Debugger Configuration |
| 29 | LNT | Gimpel Software | PC-lint/FlexeLint Configuration Format |
| 30 | MOBILECONFIG | Apple | Apple Mobile Configuration Format |
| 31 | MOBILEPROVISION | Apple | IOS Mobile Device Provisioning Profile Format |
| 32 | MOZCONFIG | N/A | Mozilla Firefox configuration data |
| 33 | NSD | Symantec Corporation | Norton System Doctor Sensor Configuration |
| 34 | PERFMONCFG | Microsoft | Performance Monitor Configuration Format |
| 35 | PRO | Adobe Systems | Profile Format |
| 36 | PROXY | N/A | Proxy configuration |
| 37 | PS1XML | Microsoft | Windows PowerShell Display Configuration Format |
| 38 | RDP | Microsoft | Remote Desktop Configuration Format |
| 39 | REG | Microsoft | Registry Format |
| 40 | SB | MIT | Scratch Project Format |
| 41 | SCF | N/A | Windows Explorer Command |
| 42 | SCONSCRIPT | N/A | SCons SConscript Configuration |
| 43 | STATUS | Universität Bremen | UDraw(Graph) |
| 44 | TSK | N/A | Pocket PC Skin |
| 45 | YAML | N/A | YAML Document |
