Alternatives to Sidebery
Vertical tab tree and bookmarks sidebar with container support. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
Sidebery
Vertical tab tree and bookmarks sidebar with container support.
Replacements
Listings that take over the same core job as Sidebery.
Tree Style Tab
Shows Firefox tabs as a vertical tree with parent and child relationships.
Tree Style Tab also shows Firefox tabs as a vertical tree under MPL-2.0, but lacks Sidebery's container-bound panels and needs userChrome.css edits to hide the native tab strip.
Similar software
Related functionality, not a direct replacement.
Firefox Multi-Account Containers
Separates browsing into colour-coded container tabs with isolated cookies.
Temporary Containers
Opens tabs in disposable Firefox containers that are deleted afterwards.
Tab Session Manager
Saves and restores window and tab sessions, with optional cloud sync.
Tab Stash
Stashes batches of tabs away as ordinary bookmarks.
Auto Tab Discard
Suspends inactive tabs to free memory, keeping them in the tab strip.
