Sidebery vs Tabblar

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.

Tabblar helps users organize and manage browser tabs. It can group tabs by domain, topic, or custom rules, and fuzzy search can find titles, URLs, and page content. Users can save, name, and restore tab sessions, while inactive tabs can be suspended to free up RAM. The site says groups and sessions sync across Chrome, Firefox, and Edge. It also states that processing is local, personal data is not collected, and data is encrypted in transit and at rest. The Basic plan is free and includes unlimited tabs, five workspaces, one group, and tab search. Plus is $5 a month, Pro is $11 a month, and Max is $24 a month; the respective annual billing amounts listed are $70, $140, and $290. Pro lists custom rules and Max lists team sharing. The extension page links to Chrome, Firefox, and Edge. Windows, macOS, and Linux are marked as not currently available, while Android and iOS are listed as coming soon.