| Reload Tab On Double-Click | | - | | |
| Reload Skip Cache Button | | - | | |
| Reload Plus | | - | | |
| Reload All Pinned Tabs | | - | | |
| Regex Finder | | - | | |
| Regex Find | | - | | |
| Reference resolver toolbar | | - | | |
| Random11's Buttons | | - | | |
| Rainbow Persona | | - | | |
| RSS Icon in url bar | | - | | |
| RSS Icon In Awesombar | | - | | |
| RSS Icon | | - | | |
| RSS Feed Icon in Navbar | | - | | |
| QuickToolbars | | - | | |
| QuickToggles | | - | | |
| Quick Tabs Ported | | - | | |
| Quick Switch Search Engine | | - | | |
| Quick Search Bar | | - | | |
| Quick Links | | - | | |
| Quick Commands | | - | | |
| Quantum Lights dynamic theme | | - | | |
| Puzzle Bars | | - | | |
| Pull Tabs | | - | | |
| Proportional NewTab | | - | | |
| Proper Buttons | | - | | |
| ProgressMeter | | - | | |
| Progre | | - | | |
| Private Tab | | - | | |
| Privacy Protector | | - | | |
| Print／Print Preview | | - | | |
| Print ／ Print Preview (Update) | | - | | |
| Print Preview Button and Keyboard Shortcut | | - | | |
| Print Preview Button PPB | | - | | |
| Print Preview Button | | - | | |
| Previous tab highlighting | | - | | |
| Prevent Tab Overflow | | - | | |
| Prettier Bookmarks Toolbar | | - | | |
| PrefBar | | - | | |
| Power Tabs | | - | | |
| Power Close | | - | | |
| Popup window | | - | | |
| Popup To Tab | | - | | |
| Popup Tab | | - | | |
| PopUp | | - | | |
| Pin／Unpin Tab | | - | | |
| Pinned Tabs Fix | | - | | |
| PinTabAlt | | - | | |
| Pin Unpin All | | - | | |
| Personas Rotator | | - | | |
| Personas In Titlebar | | - | | |
