TabCtl version history - 6 versions
Be careful with old versions! These versions are displayed for testing and reference purposes.You should always use the latest version of an add-on.
Latest version
Version 2.2.0
Released Aug 7, 2026 - 16.37 KBWorks with firefox 58.0 and laterTab listings now include each tab's favicon.
tabctl and the tools built on it can show the real site icon for every tab instead of guessing one from the domain or fetching it from a third-party icon service. Nothing is sent anywhere new: this is the icon Firefox already resolved for the tab.Source code released under MIT License
Older versions
Version 2.1.0
Released Jul 23, 2026 - 16.21 KBWorks with firefox 58.0 and laterThe extension now pushes tab changes to tabctl in real time. Previously, tools built on tabctl (status bars, launchers, tab strips) had to poll to notice new, closed, moved, or renamed tabs. The extension now sends a lightweight, debounced notification whenever your tabs change, so those tools update the moment it happens instead of on a timer.- Emits an update signal on tab create, close, move, activate, and attach/detach
- Also fires when a tab's title, URL, or pinned state changes (favicon and load-progress churn is ignored, so no needless refreshes)
- Rapid bursts (session restore, "close other tabs") are coalesced into a single notification
Fully backward compatible: no new permissions, and the wire protocol is unchanged. Requires tabctl 2.1.0 or newer on the command-line side to take effect; with an older tabctl the extension behaves exactly as before.Source code released under MIT License
Version 2.0.0
Released Jul 11, 2026 - 15.76 KBWorks with firefox 58.0 and laterReworks how the extension communicates with the tabctl command-line tool for reliability, and adds a version handshake so the two stay in sync.- If the tabctl command-line package is older than the extension, the extension shows an out-of-date indicator (a badge on its toolbar icon).
- Cleaner internal tab identifiers and more robust tab data.
- Groundwork for future features.
Requires the tabctl 2.0.0 command-line package. Please update BOTH the extension and the command-line tool to 2.0.0 togetherSource code released under MIT License
Version 1.2.1
Released Jul 5, 2026 - 15.69 KBWorks with firefox 58.0 and laterMore reliable tab commands and clearer error reporting: operations no longer hang on failure, stale-tab actions report errors instead of failing silently, and opening multiple URLs no longer aborts on a single bad URL.Source code released under MIT License
Version 1.2.0
Released Mar 29, 2026 - 17.99 KBWorks with firefox 58.0 and laterWindow focus on tab activation: When activating a tab via tabctl activate, the browser window is now focused automatically, bringing it to the foreground across virtual desktopsSource code released under MIT License
Version 1.1.2
Released Sep 29, 2025 - 18.44 KBWorks with firefox 58.0 and laterSource code released under MIT License