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WindowMerger - Organize Tabs | Smart Merge | Ideal for Multiple Monitors

Chrome extension by Clas · Productivity · Workflow

A Chrome extension in Productivity · Workflow with 47 users, barely installed.

No site access is declared in the manifest, so it cannot read the pages you open on its own.

What the developer says, and 4 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
47
Rating
5.0 (1 ratings)
Users, last 15 days
-3
Rating, last 30 days
Not watched long enough to say
Version
1.3
Updated in the store
2025-07-28
Published
2024-11-28
Manifest
V3
Browser access
3 permissions

How it has moved

Users
-3 since 01.09
47-52 · 10 readings
  1. 2026-09-0150
  2. 2026-09-0352
  3. 2026-09-0448
  4. 2026-09-0549
  5. 2026-09-0647
  6. 2026-09-0748
  7. 2026-09-0849
  8. 2026-09-0948
  9. 2026-09-1347
  10. 2026-09-1547
Rating
unchanged since 01.09
reviewsrating 5.00 · 10 readings
  1. 2026-09-01reviews1rating5.00
  2. 2026-09-03reviews1rating5.00
  3. 2026-09-04reviews1rating5.00
  4. 2026-09-05reviews1rating5.00
  5. 2026-09-06reviews1rating5.00
  6. 2026-09-07reviews1rating5.00
  7. 2026-09-08reviews1rating5.00
  8. 2026-09-09reviews1rating5.00
  9. 2026-09-13reviews1rating5.00
  10. 2026-09-15reviews1rating5.00
Users
-3 since 01.09
47-52 · 10 readings
  1. 2026-09-0150
  2. 2026-09-0352
  3. 2026-09-0448
  4. 2026-09-0549
  5. 2026-09-0647
  6. 2026-09-0748
  7. 2026-09-0849
  8. 2026-09-0948
  9. 2026-09-1347
  10. 2026-09-1547
Rating
unchanged since 01.09
reviewsrating 5.00 · 10 readings
  1. 2026-09-01reviews1rating5.00
  2. 2026-09-03reviews1rating5.00
  3. 2026-09-04reviews1rating5.00
  4. 2026-09-05reviews1rating5.00
  5. 2026-09-06reviews1rating5.00
  6. 2026-09-07reviews1rating5.00
  7. 2026-09-08reviews1rating5.00
  8. 2026-09-09reviews1rating5.00
  9. 2026-09-13reviews1rating5.00
  10. 2026-09-15reviews1rating5.00

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

No site access is declared in the manifest, so it cannot read the pages you open on its own.

  • See the address and title of every tab you have open tabs
  • Organise your tabs into groups tabGroups
  • Declares windows

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

Clas publishes 4 listings we track, 781 users between them. Listed website: clas.dev.

  1. Download Buttons in Classroom Clas · Productivity · Tools · published 2024-06-02 587 users ★ 4.7
  2. Blocket Bilsök Clas · Productivity · Tools · published 2023-09-15 118 users ★ 3.7
  3. ProfitFinder Extension | TradingView Strategy Optimizer Clas · Productivity · Tools · published 2025-09-19 29 users ★ 5.0

Like this one

Listings the catalog judges closest in what they say they do.

  1. Tab Merger Describes nearly the same job, smaller audience 6 users
  2. Smart Window Merger Describes nearly the same job, smaller audience 4 users
  3. Merge Windows Describes nearly the same job, smaller audience 4k users ★ 4.8
  4. Tab Merger by Bobu Studio Describes nearly the same job, smaller audience 11 users
  5. Tab Merger - Merge Chrome Windows & Tabs Describes nearly the same job, smaller audience 123 users ★ 5.0

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

Is this your extension?

Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.

See what the panel does

Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.