Sidebery vs The Marvellous Suspender
Sidebery
github.comThe Marvellous Suspender
github.comSide by side
| Figure | Sidebery | The Marvellous Suspender |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Plans published | 1 | 1 |
| Spec score · Tab Management Software | 7.8 (#9) | 7.2 (#26) |
| License | The repository identifies the project license as MIT. | The code is publicly available under the GNU General Public License v2. |
| Privacy | The privacy policy says Sidebery does not engage in ad targeting or data collection, stores data locally by default, and sends data only when sync is enabled and only to the selected provider. | The maker says TMS does not collect, transmit, or sell user data; settings and session data are stored locally in the browser profile. |
| Purpose | Sidebery is a Firefox extension for managing tabs and bookmarks in a sidebar. | The extension suspends inactive tabs to free the memory and CPU resources they were using. |
| Support | The maker invites users to create a GitHub Discussion or email the developer with questions about the privacy policy; the add-on lists [email protected] as its support email. | Users can seek help through the project’s GitHub repositories; the maker says there is no dedicated commercial support channel. |
Plans
In their own words
Sidebery
Sidebery is a free Firefox extension for managing tabs and bookmarks in a sidebar. Its panels can display tabs, bookmarks, and browsing history, with tabs shown as a flat list or tree. Users can group tabs under custom names, color and sort them, and automatically unload folded branches or inactive panels. Container features bind containers to panels, reopen URLs in selected containers, and set proxy or User-Agent settings. The extension also supports tab search, session restore, suspension, workspaces, snapshots, and optional cross-device synchronization. Context menus, mouse and keyboard controls, drag-and-drop behavior, and sidebar styles can be customized with variables and CSS. Data is stored locally by default; Firefox Sync or Google Drive can sync selected settings and tab data. The project is MIT-licensed. Firefox does not permit hiding the native horizontal tab bar, and some tab-moving add-ons may conflict.
The Marvellous Suspender
The Marvellous Suspender has no write-up on Specifiction yet; its figures are above.