| RightBar | | - | | |
| Roomy Bookmarks Toolbar | | - | | |
| SB Tab Replace | | - | | |
| Saka | | - | | |
| Save All Tab URLs | | - | | |
| Save My Tabs | | - | | |
| Save Page WE | | - | | |
| Save Tabs | | - | | |
| SaveAS | | - | | |
| SaveMyTabs | | - | | |
| Scientific Calculator | | - | | |
| Scriptlet | | - | | |
| Scrollbar Auto Show／Hide | | - | | |
| Scrollbar Search Highlighter | | - | | |
| Scrollmap | | - | | |
| Sea Containers | | - | | |
| Search Bar Auto-Clean | | - | | |
| Search Engine Changer | | - | | |
| Search Engine Creator | | - | | |
| Search History with Search Engine | | - | | |
| Search Multi Tabs | | - | | |
| Search Scrub | | - | | |
| Search Selected Text | | - | | |
| Search Site | | - | | |
| Search Tab | | - | | |
| Search Type B | | - | | |
| Search all Tabs | | - | | |
| Search and Switch Containers | | - | | |
| Search in New Tab | | - | | |
| Search in Sidebar | | - | | |
| Search on Engine Change | | - | | |
| Search through New Tab Page | | - | | |
| SearchBox Conforming | | - | | |
| SearchThisSite | | - | | |
| Security Tab Colorizer | | - | | |
| Select After Closing Current | | - | | |
| Select Search | | - | | |
| Shiori | | - | | |
| Short menu button | | - | | |
| Show - Hide Bookmarks ToolBar | | - | | |
| Show History Button | | - | | |
| Show History Popup | | - | | |
| Show fixed Go | | - | | |
| Showcase | | - | | |
| Side Tabs | | - | | |
| Side View | | - | | |
| Sidebar Auto Show／Hide | | - | | |
| Sidebar Mix | | - | | |
| Sidebar Note | | - | | |
| Sidebar Tabs (836961) | | - | | |
