| SaveAsFilename | | - | | |
| SaveSel | | - | | |
| ScrapBook | | - | | |
| ScrapBook Plus 2 | | - | | |
| ScrapBook X | | - | | |
| ScrapBook+ | | - | | |
| Scrapbook Lite | | - | | |
| ScribeFire Classic | | - | | |
| ScribeFire Next | | - | | |
| Select like a Boss | | - | | |
| Simple Form Fill | | - | | |
| Simple Form History | | - | | |
| SimpleFill | | - | | |
| Smart Texter | | - | | |
| Smiley Xtra | | - | | |
| Spiders Helperli | | - | | |
| Sticky Fields | | - | | |
| Super Paste! | | - | | |
| Tab Complete NG | | - | | |
| Tabbed View Source | | - | | |
| Table2Clipboard | | - | | |
| TextFast | | - | | |
| TextMarker Go | | - | | |
| Textarea Cache | | - | | |
| Textarea Cache Lite | | - | | |
| TiddlyFox extension for Firefox | | - | | |
| Timeger | | - | | |
| Title Save | | - | | |
| TitleCase | | - | | |
| Unicode Emoji | | - | | |
| Universal Edit Button | | - | | |
| View Source Choice | | - | | |
| ViewSourceWith | | - | | |
| Vixen | | - | | |
| Web Editor | | - | | |
| Web ScrapBook | | - | | |
| Web pages scanner | | - | | |
| WebMynd | | - | | |
| WebToPDF | | - | | |
| Webpage Editable Switch | | - | | |
| Wired-Marker | | - | | |
| Wrap Switcher | | - | | |
| Write Area | | - | | |
| Write My Language | | - | | |
| Xenotix Keylogger | | - | | |
| Zawgyi-One Typing Correction | | - | | |
| Zombie Keys | | - | | |
| drag to scroll (reloaded) | | - | | |
| drag-checkbox | | - | | |
| dragdropupload | | - | | |
