Advanced Tab Manager by Lemi Orhan Ergin

Advanced Tab Manager automatically sorts your tabs into color-coded Firefox tab groups based on URL patterns. Write a rule once and every matching tab lands in its group — whether you open it, navigate to it, or already had it open.

Features

• Automatic grouping — tabs join the group of the first matching rule and leave it when they navigate away
• Wildcard patterns — use * to match any part of a URL and | to combine alternatives (e.g. *github.com*|*gitlab.com*)
• Rule priority — rules are checked top to bottom; reorder them on the settings page
• Tab counts — each group title shows how many tabs it holds, e.g. Work(4)
• "etc" group — collect tabs that match no rule in a grey group, or leave them ungrouped
• Group order — keep managed groups in alphabetical or creation order
• Group colors — use the color assigned to each rule, or random colors that keep neighboring groups apart
• Auto expand — a collapsed group opens when the active tab joins it
• Selected tab theme — optionally tint the selected tab with its group's color, outlined in its container's color
• Backup & restore — export rules and settings to JSON and import them back by replacing or merging

Privacy

Everything runs locally. The extension reads tab URLs only to match your rules, stores rules in your browser's local storage, and makes no network requests. No tracking, no analytics.

Requires Firefox 140 or newer (native tab groups). Source code: https://github.com/lemiorhan/firefox-advanced-tab-manager