Tab Session Manager, in a line: An open-source session manager with automatic saving, tags, tab groups and cloud sync. If it is not quite right, these are the extensions that cover the most of what it does, ranked by which of its features each one shares - with what they cost and where they run.
Facts read from each product’s own store listing and website on 13 October 2026. We make Latr, so it is listed first and marked as ours; the rest are ranked by the numbers.
What Tab Session Manager does
Tab Session Manager offers 6 of the 15 things we compare. An alternative is only an alternative if it keeps the ones you use.
The alternatives
Tab snoozer
Tab Session Manager is about restoring the state of your browser; Latr is about returning a page at a moment. Both save windows with their tab groups and both autosave. Tab Session Manager goes further on sessions - tags, tracking windows, cloud sync across browsers. Latr goes in a different direction: any page or window can carry a time, and at that time it reopens by itself, scrolled to where you stopped.
Covers 6 of Tab Session Manager’s 6 features. Adds: brings a tab back at a time you choose, repeating reminders, reopens at the line you stopped reading, manages every open tab, across windows, finds duplicate tabs, puts idle tabs away automatically, share a list of tabs, focus timer with site blocking.
Unlike Tab Session Manager, it also runs on Brave, Vivaldi, Opera, Arc, and, like Tab Session Manager, it is free to start (Free; Pro is $19 once, for themes, sounds and extras).
Choose Latr over Tab Session Manager if you want saved windows and single tabs to come back at a time you choose, not only when you go looking for them.
Latr vs Tab Session Manager, in full →Workspaces
Covers 5 of Tab Session Manager’s 6 features. Not listed or missing: saves sessions automatically. Adds: manages every open tab, across windows, finds duplicate tabs, share a list of tabs, mobile app.
Unlike Tab Session Manager, it also runs on iOS, Android, and, like Tab Session Manager, it is free to start (Free up to 60 saved tabs; $4.50 a member a month billed yearly, or $6 monthly).
Latr vs Toby →Tab snoozer
Covers 5 of Tab Session Manager’s 6 features. Not listed or missing: keeps tab groups. Adds: brings a tab back at a time you choose, repeating reminders, finds duplicate tabs, puts idle tabs away automatically.
It does not run on Firefox, where Tab Session Manager does, and, like Tab Session Manager, it is free to start (Free on one device; Cloud Sync is a paid Pro option with a 14-day trial).
Latr vs PingLater →Tab list
Covers 5 of Tab Session Manager’s 6 features. Not listed or missing: saves sessions automatically.
It does not run on Chrome, Edge, where Tab Session Manager does, and, like Tab Session Manager, it is free to start (Free and open source (MPL-2.0)).
Latr vs Tab Stash →Session manager
Covers 4 of Tab Session Manager’s 6 features. Not listed or missing: keeps tab groups, sync between computers. Adds: manages every open tab, across windows.
It does not run on Edge, Firefox, where Tab Session Manager does, and, like Tab Session Manager, it is free to start (Free - "Access to all features is free").
Session Buddy vs Tab Session Manager, in full →Tab list
Covers 4 of Tab Session Manager’s 6 features. Not listed or missing: saves sessions automatically, keeps tab groups. Adds: share a list of tabs.
Unlike Tab Session Manager, it also runs on Safari, and, like Tab Session Manager, it is free to start (Free - no paid plan on its listing or site).
Latr vs OneTab →Feature by feature
| Tab Session Manager | Latr | Toby | PingLater | Tab Stash | |
|---|---|---|---|---|---|
| Brings a tab back at a time you choose | Not listed | Yes | Not listed | Yes | Not listed |
| Saves a whole window and restores it | Yes | Yes | Yes | Yes | Yes |
| Saves sessions automatically | On close and on an interval | Optional, off by default | Not listed | Snapshots | Not listed |
| Keeps tab groups | Yes | Yes | Yes | Not listed | Firefox tab groups |
| Manages every open tab, across windows | Not listed | Yes | Yes | Not listed | Not listed |
| Folders or collections of saved pages | Sessions with names and tags | Yes | Collections and spaces | Someday list and categories | Groups and sub-groups, as bookmarks |
| Import and export | Including Session Buddy | Yes | Export | JSON backup | Including OneTab format |
| Sync between computers | Cloud sync | Optional, through your browser’s own sync | Yes | Paid Cloud Sync, up to 5 devices | Through Firefox Sync |
Checked 13 October 2026 against each product’s own store listing and website. “Not listed” means the feature is not in the product’s own listing or site - not that it is missing.
Switching
Latr reads any file that contains web addresses, so an exported session comes in as a list of links. For named folders and titles, open the session in your browser and save the window with Latr’s Save all tabs, which keeps its tab groups.
Every comparison we have written is on the compare page, including how Latr stacks up against each alternative above.
Questions
Tab Session Manager does a lot well. Open source, on all three major stores, with 170,156 daily users on Firefox Add-ons. People look elsewhere for what it does not offer, going by its own listing. Rated 3.5 on the Chrome Web Store and 3.7 on Edge Add-ons. Nothing in its listing schedules a session to come back at a time. Asks for tab access at install.
Of the alternatives on this page, Latr, Toby, PingLater, Tab Stash, Session Buddy and OneTab are free to start. Which is best depends on which of Tab Session Manager’s 6 features you rely on: saves a whole window and restores it, saves sessions automatically, keeps tab groups, folders or collections of saved pages, import and export, sync between computers. The cards above say which each one keeps.
Yes: Latr, Toby, Tab Stash and OneTab run on Firefox, according to their own listings.
Latr reads any file that contains web addresses, so an exported session comes in as a list of links. For named folders and titles, open the session in your browser and save the window with Latr’s Save all tabs, which keeps its tab groups.
Sources
Each alternative's own sources are listed on its comparison page, linked from its card above.
Free, no account, and nothing leaves your device. About ten seconds to install, and one keystroke to use.
Also on Brave, Vivaldi, Arc and Opera - straight from the Chrome Web Store listing.
