Stax — Easy Tab Manager

Triage 100+ tabs from one page. Auto-detect watched YouTube videos, save the rest, and catch duplicate tabs before they pile up.

Drowning in 100+ YouTube tabs? Stax is the easy way to dig out. Stax knows the difference between videos you still want to watch and ones you've already finished — so you can clear the clutter in one click instead of scrolling forever. ▸ TRIAGE EVERYTHING FROM ONE PAGE A full-page dashboard of every open tab across all your windows, grouped by site so 63 YouTube tabs collapse into one row. Multi-select by checkbox or whole domain, then Save, Close, or Save & Close. ▸ ALREADY-WATCHED DETECTION Stax reads how far you've played each YouTube video and tags it "Watched" (90%+) or shows a live progress percentage. Hit "Select watched" to grab every finished video at once and close them. Progress updates live as videos play — no refresh. ▸ WATCHED HISTORY + REOPEN GUARD Every video you finish is remembered. Try to reopen one and Stax warns you first — and if it's still open in another tab, it offers to jump to that tab instead of making a duplicate. ▸ DUPLICATE-TAB CATCHER Open a page that's already open somewhere else and Stax drops a banner: "Switch to it" or "Keep this." Works on every site. ▸ QUICK POPUP + SAVED LISTS One-tap Clear watched / Save all / Open dashboard from the toolbar. Bundle tabs into named, reopenable lists. Instant search. Undo. Export to JSON. PRIVACY: Everything stays on your device. No accounts, no servers, no tracking, no network requests. Your data lives in local storage and never leaves your browser.