Tabbit — Automatic Tab Grouping

Tabbit automatically groups new tabs with the tab that opened them. Click a link, and the new tab joins its opener in a group. No manual organizing, no dragging tabs around.

It supports two grouping modes, five naming conventions, and per-domain custom rules, so the grouping matches how you actually browse rather than forcing one behavior on everything.

Features

• Group by opening tab (default) or by matching domain
• Name groups by domain, subdomain, full hostname, page title, or leave them nameless
• Pretty names for clean, capitalized group titles
• Set a maximum number of tabs per group
• Auto-ungroup the last tab when a group shrinks to one
• Auto-collapse inactive groups when switching tabs
• Custom rules that assign a name and color to specific domains, ordered first-match-wins with subdomain matching
• Blacklist domains you never want grouped
• Every setting lives in the toolbar popup and saves instantly