| TextNotes | | - | | |
| Theme Test | | - | | |
| Tic Tac Toe | | - | | |
| Tilt | | - | | |
| Time Blocker | | - | | |
| TimeStamp Converter | | - | | |
| TimerFox | | - | | |
| TimestampDecode | | - | | |
| Tiny Calendar | | - | | |
| Tiny Todo | | - | | |
| Toast Notification Alerter Add-on for Windows 8 | | - | | |
| Todo | | - | | |
| Typing Speed | | - | | |
| Typing Stats | | - | | |
| URL Relay | | - | | |
| URL Saver | | - | | |
| Unpacked extension development | | - | | |
| Unzip | | - | | |
| Uprecords | | - | | |
| User-Agent JS Fixer | | - | | |
| Version | | - | | |
| ViewAbout | | - | | |
| WIFI Finder | | - | | |
| WebNotes | | - | | |
| WhilePaper | | - | | |
| Widgetify | | - | | |
| WigBear | | - | | |
| Wikilin | | - | | |
| WindowsUpdate | | - | | |
| XPICompiler | | - | | |
| Xultris | | - | | |
| Yasminoku | | - | | |
| YouNote | | - | | |
| Zaqwes Working Day | | - | | |
| Zotero | | - | | |
| adiaryたんにしてやんよ | | - | | |
| deskCut | | - | | |
| eCalculator | | - | | |
| easy note | | - | | |
| easySearch | | - | | |
| ffNote | | - | | |
| filterbreaker | | - | | |
| fireNotes | | - | | |
| flashtoggle | | - | | |
| foxy-calc | | - | | |
| foxyNotes | | - | | |
| hasher | | - | | |
| iMacros for Firefox | | - | | |
| markdown-viewer-webext | | - | | |
| newTabTime | | - | | |
