Auto-save tab groups
MV3-safe background saves, configurable by time / change percent / minimum tabs.
Tab & session manager
The tab session manager that actually finds your tabs.
Save tab groups in one click, recover from Chrome crashes, and search every saved session with natural-language AI. Free forever, local-first, no account required.
Free download. Works in Chrome, Edge, Brave, Arc, Opera, Vivaldi.
About
What Sessionat does.
Sessionat is a tab session manager for Chrome that combines auto-save with AI-powered search. Tab groups are captured automatically as you browse — configurable by time interval, percent change, or manual trigger — and stored locally in chrome.storage so nothing leaves your device unless you opt into AI features. Where Sessionat differs from OneTab, Session Buddy, Toby, and Workona is the AI layer: a built-in chat assistant indexes everything you save and answers questions like "find that React tutorial I read last Tuesday" or "summarize my research on Postgres tuning." Auto-Researcher takes a topic and returns a curated session with the best sources — free uses cost credits granted on signup. Cloud sync is optional. Export/import is documented JSON. PIN protection, dark mode, and crash recovery are all in the free tier.
Features
Everything in Sessionat.
Crash recovery
Restores your tabs when Chrome unexpectedly closes — no setup required.
AI session search
Natural-language search across all saved sessions. "Find that article on…" works.
AI auto-researcher
Give it a topic, get back a curated session with the best resources.
Local-first storage
Sessions live in chrome.storage by default. Cloud sync is opt-in only.
Documented JSON export
Stable schema; round-trips to OneTab, Session Buddy, Toby, Tab Session Manager.
PIN protection + dark mode
Lock the popup behind a PIN; respects system color scheme.
Google Search auto-capture
Automatically saves tabs opened from Google Search results into a labeled session.
FAQ
Sessionat — questions
Is Sessionat really free?
Yes. The full tab manager — unlimited sessions, auto-save, crash recovery, dark mode, PIN, JSON export — is free forever. AI features (search, chat, auto-researcher) cost credits; new accounts get 100 credits on signup with no card required.
Does it work without an account?
Yes. Local features work fully offline with no account. You only sign up when you want to use the AI features or sync sessions across devices.
Can I import from Session Buddy or OneTab?
Yes. Sessionat reads the standard JSON formats exported by Session Buddy, Toby, Tab Session Manager, and OneTab. The import button is in Settings.
Does it support Edge, Brave, Arc, Opera, Vivaldi?
Yes. Sessionat works in any Chromium-based browser. Install from the Chrome Web Store; the extension functions the same in Edge / Brave / Arc / Opera / Vivaldi.