Reviews of Tab Session Manager

By: sienori

List of user reviews and ratings for Tab Session Manager

Total ratings

4.16 (Rating count: 1,222)

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Review summary

Users praise the add-on for saving/restoring very large tab sessions and preventing loss after crashes, plus good customization and a manual export option. However, reliability issues recur: sessions can be deleted by bugs, auto-save can fail, and backups may be outdated. It also fails to preserve tab groups/Tree Style Tab state and per-tab history. Open/restore can be flaky, and delete actions lack confirmation, sometimes causing duplicates and memory bloat. Overall, strong concept, with fragile execution.

Pros

Saves and restores large tab sessions and thousands of tabs after crashes or closures.
Keeps sessions across multiple windows and helps prevent lost work.
Highly customizable and flexible workflow.
Supports manual export of saved sessions.
Has saved users from major losses by restoring many tabs quickly.

Cons

Bugs can delete all sessions and auto-save can fail, leading to data loss or stale backups.
Does not preserve tab groups or Tree Style Tab state, nor per-tab browsing history on restore.
Open/restore actions can misfire (Open button may not work, startup window shifts) and can create duplicate windows, increasing memory usage.
Delete button is too close to Open and often lacks a confirmation, risking accidental deletions.
Behavior varies across Firefox updates and some users report memory bloat from duplicated tabs.

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User Reviews

Recent rating average: 4.30

All time rating average: 4.16

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15% (87)

Date	Author	Comment
2026-06-12	Fi*****

2026-06-11	Er*****

2026-05-17	Ka*****	One of the best extensions I've installed. Simple, effective, and doesn't bloat the browser at all.
One of the best extensions I've installed. Simple, effective, and doesn't bloat the browser at all.