| jup | Code Crusader User Preferences |
| jvd | JavaView Camera and Display Settings |
| jvr | JavaView Configuration |
| jvs | JavaScript Proxy Autoconfig |
| kax | Kieker Configuration File |
| kbd | Autodesk 3D Studio MAX Keyboard Shortcuts |
| kbn | TeamSpeak Keybinding |
| kcf | Sony Ericsson HID Keypad Configuration |
| kfg | Adobe Acrobat Preflight Profile |
| kfp | KaraFun Karaoke Presets |
| kik | Kickabout Settings |
| klc | Windows MKLC Keyboard Layout |
| ksr | Kiwi Syslog Rule |
| ktc | Attachmate KEA! Configuration |
| ktw | KeyTweak Configuration |
| kuip | Kingsoft Office Personalization |
| kyb | Keyboard Layout |
| kys | Adobe Photoshop Keyboard Shortcut Settings |
| las | Light-O-Rama Animation Sequence |
| launch | Zend Studio Debugger Configuration Data |
| lbu | Cloaked Affiliate Link Builder Settings |
| lcc | Light-O-Rama Channel Configuration |
| lcc | Capture One Lens Cast Correction |
| lct | Oracle Generic Loader Control File |
| ldr | WindLDR Ladder Diagram |
| ldt | Belkin Loadout Manager Data |
| lfo | Alchemy Low Frequency Oscillator Presets |
| lily | PCSX2 LilyPad Configuration |
| lir | ADI Ocelot Configuration |
| list | APT Package Resource List |
