| .ASC | Symantec Corporation | Fichiers encodés | PGP (Pretty Good Privacy) ASCII Armored File | UltraEdit | IDM Computer Solutions |
| .ASCII | Sublime HQ Pty Ltd | Fichiers textes | ASCII Text | UltraEdit | IDM Computer Solutions |
| .B | Rockstar Games | Fichiers de jeu | Grand Theft Auto 3 Saved Game File | UltraEdit | IDM Computer Solutions |
| .CF | Proofpoint, Inc. | Fichiers de paramètres | Sendmail Configuration File | UltraEdit | IDM Computer Solutions |
| .CFG | Unknown Developer | Fichiers de développeurs | Configuration File | UltraEdit | IDM Computer Solutions |
| .CONFIG | Unknown Developer | Fichiers de développeurs | Configuration File | UltraEdit | IDM Computer Solutions |
| .DOK | Nenad Hrg | Fichiers de paramètres | DesktopOK Icons Layout File | UltraEdit | IDM Computer Solutions |
| .DTD | Syncro Soft | Fichiers de développeurs | Document Type Definition File | UltraEdit | IDM Computer Solutions |
| .EW | OpenEuphoria | Fichiers de développeurs | Euphoria Source Code File | UltraEdit | IDM Computer Solutions |
| .EX | Symantec Corporation | Fichiers de paramètres | Norton Ghost Template Data | UltraEdit | IDM Computer Solutions |
| .EXW | OpenEuphoria | Fichiers de développeurs | Euphoria Source Code File | UltraEdit | IDM Computer Solutions |
| .FAQ | The Document Foundation | Fichiers 3D | Frequently Asked Questions Document | UltraEdit | IDM Computer Solutions |
| .GM | GameMonkey | Fichiers de développeurs | GameMonkey Script | UltraEdit | IDM Computer Solutions |
| .HRL | Ericsson Computer Science Laboratory | Fichiers de développeurs | Erlang Header File | UltraEdit | IDM Computer Solutions |
| .HVC | Sublime HQ Pty Ltd | Fichiers textes | ASCII Text | UltraEdit | IDM Computer Solutions |
| .KBD | Autodesk, Inc. | Fichiers de paramètres | 3ds Max Keyboard Shortcuts File | UltraEdit | IDM Computer Solutions |
| .KDS | Knyzhov Dmitry | Fichiers de paramètres | KD Player Skin File | UltraEdit | IDM Computer Solutions |
| .LIS | SourceForge | Fichiers textes | SQR (Structured Query Reporting) Output File | UltraEdit | IDM Computer Solutions |
| .MB1 | Apogee Software, Ltd. | Fichiers de jeu | Monster Bash Game Data File | UltraEdit | IDM Computer Solutions |
| .ME | Unknown Developer | Fichiers divers | Temporary Delete Me File | UltraEdit | IDM Computer Solutions |
| .NLS | Uri Wilensky | Fichiers de développeurs | NetLogo Source Code File | UltraEdit | IDM Computer Solutions |
| .NOW | The Document Foundation | Fichiers textes | Readme Text Document File | UltraEdit | IDM Computer Solutions |
| .PB1 | Broderbund | Fichiers de données | Broderbund 3D Home Architect Data | UltraEdit | IDM Computer Solutions |
| .PHL | Amazon | Fichiers eBook | Kindle Popular Highlights File | UltraEdit | IDM Computer Solutions |
| .RAC | Concept2 Inc. | Fichiers de données | Venue Race Application File Format | UltraEdit | IDM Computer Solutions |
| .README | The Document Foundation | Fichiers textes | Readme Text Document File | UltraEdit | IDM Computer Solutions |
| .SKI | Motorola | Fichiers de paramètres | Motorola Phone Skin File | UltraEdit | IDM Computer Solutions |
| .SMS | Sega | Fichiers de jeu | Sega Master System ROM | UltraEdit | IDM Computer Solutions |
| .STC | Adobe Systems Incorporated | Fichiers Web | Contribute Connection Key File | UltraEdit | IDM Computer Solutions |
| .STRING | IDM Computer Solutions | Fichiers de données | UltraEdit Data | UltraEdit | IDM Computer Solutions |
| .SVH | IEEE Xplore | Fichiers de développeurs | SystemVerilog Source Code Header File | UltraEdit | IDM Computer Solutions |
| .TLD | The Eclipse Foundation | Fichiers de développeurs | Tag Library Descriptor File | UltraEdit | IDM Computer Solutions |
| .TOPC | 3d-scape Limited | Fichiers de données | TopicCrunch Project File | UltraEdit | IDM Computer Solutions |
| .UENC | IDM Computer Solutions | Fichiers cryptés | UltraEdit Encrypted Text File | UltraEdit | IDM Computer Solutions |
| .UPD | Various Developers | Fichiers textes | Program Update Information | UltraEdit | IDM Computer Solutions |
| .VNT | Sony | Fichiers textes | Sony Ericsson Mobile Phone vNote File | UltraEdit | IDM Computer Solutions |
| .Y | Microsoft Corporation | Fichiers Raster Image | Subsampled Raw YUV Image | UltraEdit | IDM Computer Solutions |
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