Choose Latr if
you want saved windows and single tabs to come back at a time you choose, not only when you go looking for them.
Tab Session Manager: An open-source session manager with automatic saving, tags, tab groups and cloud sync. Latr: a tab snoozer that reopens the page on its own at the time you pick, where you stopped reading. Here is where each one is the better choice.
Features and pricing checked 13 October 2026 against: Tab Session Manager on the Chrome Web Store , Tab Session Manager on Firefox Add-ons , tab-session-manager.sienori.com .
The short answer
you want saved windows and single tabs to come back at a time you choose, not only when you go looking for them.
you want an open-source session manager that autosaves aggressively and syncs between Chrome and Firefox.
Feature by feature
| Latr | Tab Session Manager | |
|---|---|---|
| Brings a tab back at a time you choose | Yes | Not listed |
| Repeating reminders | Yes | Not listed |
| Reopens at the line you stopped reading | Yes | Not listed |
| Saves a whole window and restores it | Yes | Yes |
| Saves sessions automatically | Optional, off by default | On close and on an interval |
| Keeps tab groups | Yes | Yes |
| Manages every open tab, across windows | Yes | Not listed |
| Finds duplicate tabs | Yes | Not listed |
| Puts idle tabs away automatically | Optional, off by default | Not listed |
| Folders or collections of saved pages | Yes | Sessions with names and tags |
| Import and export | Yes | Including Session Buddy |
| Share a list of tabs | As a link, with no server | Not listed |
| Focus timer with site blocking | Yes | Not listed |
| Sync between computers | Optional, through your browser’s own sync | Cloud sync |
| Mobile app | No | Not listed |
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.
Pricing and platforms
| Latr | Tab Session Manager | |
|---|---|---|
| What it is | Tab snoozer | Session manager |
| Price | Free; Pro is $19 once, for themes, sounds and extras | Free and open source (MPL-2.0) |
| Account | Never - there is no account to make | Not stated |
| Runs on | Chrome, Edge, Firefox, Brave, Vivaldi, Opera, Arc | Chrome, Edge, Firefox |
| Tab access asked for at install | No - tab access is optional, asked for at the click that needs it | Yes - asks for tab access at install |
| In the stores |
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Honestly
The core difference
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.
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.
Weighing more than Latr? See every Tab Session Manager alternative, ranked by how much of Tab Session Manager each one covers.
Latr’s import reads a pasted list, a bookmarks HTML file, and export files from OneTab, Toby, Session Buddy, Raindrop.io and Pocket. Groups and titles survive for the formats it knows; any other file that contains web addresses comes in as a list of links. Only http and https links are kept, and anything left out is counted.
Questions
Yes, if you switch it on. Latr can autosave the window you are working in every 15, 30 or 60 minutes and save a window as it closes. Named windows are kept for good; automatic ones rotate in a ring you set.
No. Reminders and settings can travel through your browser’s own sync, but saved windows are too large for it and stay on the computer that saved them. To move one, send it to yourself as a share link.
Latr: Free; Pro is $19 once, for themes, sounds and extras. Tab Session Manager: Free and open source (MPL-2.0).
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.