Is Tab Session Manager Safe? — Extension Safety Profile
Quick verdict: Tab Session Manager earns a safety grade A, 81.1 out of 100, based on 5 of 5 dimensions.
81.1/100
Grade A · 5 of 5 checks
What we found
Automated safety profile from public signals (the extension's manifest & permissions, store listing, publisher, privacy policy). A full review hasn't been published yet.
What this safety grade means
Tab Session Manager earns a safety grade of A (81.1/100), measured across 5 of 5 dimensions. Its strongest area is Maintenance & Ownership (100%). The weakest is Publisher & Identity (60%) — what holds its grade back the most.
On the public records we can check, Tab Session Manager comes through cleanly. 100,000 active users/installs reported on the store. Store rating 3.5/5 from 442 user ratings. Last updated on the store 2026-07-18. This is an automated profile, not a hands-on review — so treat the grade as a starting point: open Tab Session Manager's own store listing and privacy policy before installing, and weigh it against the other tab management extensions we track below.
Safety Signals
Based on 5 of 5 safety dimensions
| Dimension | Score | Bar | Source |
|---|---|---|---|
| Publisher & Identity | 60% · 4.8/8 pts | Automated signals | |
| Permissions & Access | 83% · 20.8/25 pts | Automated signals | |
| Data & Privacy | 83% · 13.2/16 pts | Automated signals | |
| Maintenance & Ownership | 100% · 7.5/7.5 pts | Automated signals | |
| Community Reputation | 76% · 7.6/10 pts | Automated signals |
In-depth safety analysis
This extension requests permissions that are typical for a tab session manager. The tabs permission lets it read the URLs and titles of all open tabs, which is necessary to save and restore browsing sessions. storage and unlimitedStorage allow it to save those sessions locally,
AI-assisted analysis of the documented signals above (permissions, store data, privacy practices) — explains what they mean and the risks typical for this category. Not a hands-on test.
What the store listing shows
Who's Behind Tab Session Manager?
- Publisher Sienori
Public records identify the publisher, but no individual founders or a separate registered company are named — which is what holds the Publisher & Identity score back. Less public information about who operates an extension means less you can verify about their long-term accountability.
How it compares
Among the 10 Tab Management extensions we track, Tab Session Manager scores higher on safety than 80% of them.
Computed from our own database of assessed Tab Management extensions — updated as we track more.
Evidence on File (12)
Tab Session Manager FAQ
- Is Tab Session Manager safe?
- Tab Session Manager earns a safety grade of A (81.1/100) on our evidence-based assessment, based on 5 of 5 safety dimensions we could verify from public records. This is an automated profile built from public records, not a hands-on review.
- Who is behind Tab Session Manager?
- Tab Session Manager is operated by Sienori.
Alternatives we track
Browse all browser extensions we've checked → · Best Tab Management extensions