| Red Google Theme | | - | | |
| Reddit Button | | - | | |
| Reddit Opener | | - | | |
| Reddit Submission Finder | | - | | |
| Reddit on Youtube | | - | | |
| Reddit-Liquid-Streams | | - | | |
| RedditInfinity | | - | | |
| RedditNotifier | | - | | |
| Reddited | | - | | |
| Redirect Bypasser | | - | | |
| Redirect Check Client | | - | | |
| Redirect to DuckDuckGo | | - | | |
| Regchan Firefox Plugin | | - | | |
| Remember The Milk for Gmail | | - | | |
| Remove Cookie for Google Account Chooser | | - | | |
| Remove Google Tracking for Copy | | - | | |
| Remove Google Tracking | | - | | |
| Remove Yahoo Tracking | | - | | |
| Replace Translator | | - | | |
| Result Preview | | - | | |
| Resume Video | | - | | |
| Resurrect Pages IsUp Edition | | - | | |
| Reverse Timeline | | - | | |
| Right Click DuckDuckGo | | - | | |
| S3.Google Translator | | - | | |
| SEO | | - | | |
| SafeBrowser | | - | | |
| SafeSearch Off | | - | | |
| Safelinking | | - | | |
| Safeshort | | - | | |
| Save Button for Pinterest | | - | | |
| Save My YouTube Day! | | - | | |
| Save To The Wayback Machine | | - | | |
| Save URL to Wayback Machine | | - | | |
| Scan Url with | | - | | |
| Search By Image(by Google) | | - | | |
| Search Cloudlet | | - | | |
| Search Engine Favicons | | - | | |
| Search Everywhere | | - | | |
| Search Image Everywhere | | - | | |
| Search Image by Bing | | - | | |
| Search Site WE | | - | | |
| Search Slate | | - | | |
| Search Status Reloaded | | - | | |
| Search Youtube | | - | | |
| Search by Image for Google | | - | | |
| Search by Image | | - | | |
| Search in Language | | - | | |
| Search in Popup | | - | | |
| Search in YouTube | | - | | |
