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Code.org Serial Connector

Chrome Web Store listing by Code.org

A Chrome extension with 200 000 users, a widely installed extension.

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

What the developer says, and 1 screenshot

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

Users
200 000
Rating
4.5 (6 ratings)
Users, last 18 days
+100k
Rating, last 30 days
Not watched long enough to say
Version
33
Updated in the store
2019-05-15
Published
2016-01-29
Manifest
V2
Browser access
3 permissions

How it has moved

Users
+100k since 01.09
100k-200k · 5 readings
  1. 2026-09-01100k
  2. 2026-09-02100k
  3. 2026-09-10100k
  4. 2026-09-17200k
  5. 2026-09-18200k
Rating
unchanged since 01.09
reviewsrating 4.50 · 5 readings
  1. 2026-09-01reviews6rating4.50
  2. 2026-09-02reviews6rating4.50
  3. 2026-09-10reviews6rating4.50
  4. 2026-09-17reviews6rating4.50
  5. 2026-09-18reviews6rating4.50
Users
+100k since 01.09
100k-200k · 5 readings
  1. 2026-09-01100k
  2. 2026-09-02100k
  3. 2026-09-10100k
  4. 2026-09-17200k
  5. 2026-09-18200k
Rating
unchanged since 01.09
reviewsrating 4.50 · 5 readings
  1. 2026-09-01reviews6rating4.50
  2. 2026-09-02reviews6rating4.50
  3. 2026-09-10reviews6rating4.50
  4. 2026-09-17reviews6rating4.50
  5. 2026-09-18reviews6rating4.50

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.

  • Declares serial
  • Read your storage devices system.storage
  • Store data in your browser without the usual size limit unlimitedStorage

The full permission history for this extension

What changed recently

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

The publisher

Code.org.

Like this one

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

  1. TinkerCode Monitor Describes nearly the same job, smaller audience 3 users (last published figure)
  2. Web COM Describes nearly the same job, smaller audience 4 users (last published figure)
  3. Serial Monitor Describes nearly the same job, smaller audience 344 users ★ 4.3
  4. Serial Monitor Describes nearly the same job, smaller audience 3k users ★ 3.6
  5. eTower Serial Tool Describes nearly the same job, smaller audience 3 users (last published figure)

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.