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The Blackboard - Lightning-Fast Real-time Collaborative Drawing tool

Chrome extension by Abhishek Sontakke · Productivity · Workflow

A Chrome extension in Productivity · Workflow with 569 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 5 screenshots

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

Users
569
Rating
5.0 (16 ratings)
Users, last 16 days
+17
Rating, last 30 days
Not watched long enough to say
Version
2.2.0
Updated in the store
2025-03-05
Published
2022-09-24
Manifest
V3
Browser access
1 permission

How it has moved

Users
+17 since 31.08
543-569 · 9 readings
  1. 2026-08-31552
  2. 2026-09-02555
  3. 2026-09-04553
  4. 2026-09-06547
  5. 2026-09-07543
  6. 2026-09-08546
  7. 2026-09-09554
  8. 2026-09-13561
  9. 2026-09-15569
Rating
unchanged since 31.08
reviewsrating 5.00 · 9 readings
  1. 2026-08-31reviews16rating5.00
  2. 2026-09-02reviews16rating5.00
  3. 2026-09-04reviews16rating5.00
  4. 2026-09-06reviews16rating5.00
  5. 2026-09-07reviews16rating5.00
  6. 2026-09-08reviews16rating5.00
  7. 2026-09-09reviews16rating5.00
  8. 2026-09-13reviews16rating5.00
  9. 2026-09-15reviews16rating5.00
Users
+17 since 31.08
543-569 · 9 readings
  1. 2026-08-31552
  2. 2026-09-02555
  3. 2026-09-04553
  4. 2026-09-06547
  5. 2026-09-07543
  6. 2026-09-08546
  7. 2026-09-09554
  8. 2026-09-13561
  9. 2026-09-15569
Rating
unchanged since 31.08
reviewsrating 5.00 · 9 readings
  1. 2026-08-31reviews16rating5.00
  2. 2026-09-02reviews16rating5.00
  3. 2026-09-04reviews16rating5.00
  4. 2026-09-06reviews16rating5.00
  5. 2026-09-07reviews16rating5.00
  6. 2026-09-08reviews16rating5.00
  7. 2026-09-09reviews16rating5.00
  8. 2026-09-13reviews16rating5.00
  9. 2026-09-15reviews16rating5.00

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

The full permission history for this extension

What changed recently

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

The publisher

Abhishek Sontakke publishes 2 listings we track, 773 users between them. Listed website: tryblackboard.com.

  1. Networkly - LinkedIn Automation, Bulk Messaging & Connections Abhishek Sontakke · Productivity · Tools · published 2025-10-18 204 users ★ 5.0

Like this one

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

  1. Whiteboard Online Describes nearly the same job, smaller audience 1k users ★ 5.0
  2. Annotate Together - Screen Drawing Tool Describes nearly the same job, smaller audience 430 users
  3. ShadeSurfer Whiteboard Drawing Tool Describes nearly the same job, smaller audience 17 users
  4. Whiteboard Describes nearly the same job, smaller audience 4k users ★ 2.6
  5. White Board by AI Muse (Beta) Describes nearly the same job, smaller audience 150 users

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.