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 443 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 2 of 5 checks verified | Automated signals | |
| Permissions & Access | 83% · 20.8/25 pts 3 of 3 checks verified | Automated signals | |
| Data & Privacy | 83% · 13.2/16 pts 4 of 5 checks verified | Automated signals | |
| Maintenance & Ownership | 100% · 7.5/7.5 pts 1 of 2 checks verified | Automated signals | |
| Community Reputation | 76% · 7.6/10 pts 2 of 4 checks verified | Automated signals |
In-depth safety analysis
This extension requests permissions that allow it to read and manage your open tabs, store large amounts of session data locally, export sessions via downloads, and use your identity for potential cloud sync. The "tabs" and "storage" permissions are essential for a tab manager, while "identity" and "downloads" extend its functionality to syncing and backup. For a session manager offering cloud features, this permission set is not unusual, but it does grant broad access to your browsing activity.
Tab management extensions inherently have access to the URLs and titles of all open tabs, which can include sensitive information. Users should be aware that any extension in this category could potentially see what you browse. When cloud sync is involved, data may leave your device. It is wise to review the developer's privacy policy, check that data handling claims are clear, and consider whether the sync feature is necessary. Also, be cautious of clones or lookalike extensions that may misuse these permissions.
According to the fact sheet, the extension's strongest dimension is Maintenance & Ownership, indicating it is actively updated and its ownership is clear. The weakest dimension is Publisher & Identity, which suggests the developer's identity may not be fully transparent or verified. This combination means the extension is well-maintained, but users might want to seek additional reassurance about who is behind it before granting sensitive permissions.
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