Tab Organizer by Domain

Tab Organizer by Domain is a lightweight Manifest V3 extension for Brave and Chrome that keeps a cluttered browser tidy by automatically sorting open tabs into native, color-coded tab groups based on their domain — so all your github.com tabs land together, and subdomains like mail.google.com or docs.google.com are grouped under the parent google.com. A single click groups the current window, or you can enable auto-grouping to keep tabs organized as you browse. The popup also lets you search open tabs by title or URL, close exact-duplicate tabs, and ungroup everything in one action. It requires no account, no backend, and sends no data anywhere — everything runs locally in your browser.