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Competitive Companion

Chrome extension by Jasper van Merle · Productivity · Developer

A Chrome extension in Productivity · Developer with 100 000 users, a widely installed extension.

Specific sites only: 1 match pattern.

What the developer says, and 1 screenshot

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

Users
100 000
Rating
4.8 (115 ratings)
Users, last 18 days
unchanged
Rating, last 30 days
Not watched long enough to say
Version
2.65.0
Updated in the store
2026-07-01
Published
2017-12-10
Manifest
V3
Browser access
4 permissions, 1 site pattern

How it has moved

Users
unchanged since 01.09
100k · 3 readings
  1. 2026-09-01100k
  2. 2026-09-05100k
  3. 2026-09-18100k
Rating
unchanged since 01.09
reviewsrating 4.78 · 3 readings
  1. 2026-09-01reviews114rating4.78
  2. 2026-09-05reviews115rating4.78
  3. 2026-09-18reviews115rating4.78
Users
unchanged since 01.09
100k · 3 readings
  1. 2026-09-01100k
  2. 2026-09-05100k
  3. 2026-09-18100k
Rating
unchanged since 01.09
reviewsrating 4.78 · 3 readings
  1. 2026-09-01reviews114rating4.78
  2. 2026-09-05reviews115rating4.78
  3. 2026-09-18reviews115rating4.78

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

Specific sites only: 1 match pattern.

  • http://localhost/
  • Run its own code on the pages it can access scripting
  • Act on the current tab, but only after you click it activeTab
  • Add items to the right-click menu contextMenus
Show the remaining 1
  • Store data in your browser storage

The full permission history for this extension

What changed recently

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

The publisher

Jasper van Merle publishes 2 listings we track, 101k users between them.

  1. CG Local Jasper van Merle · Productivity · Developer · published 2018-01-03 685 users ★ 5.0

Like this one

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

  1. AlgoLeague Companion Describes nearly the same job, smaller audience 7 users ★ 5.0
  2. CodePlay Helper Describes nearly the same job, smaller audience 7 users
  3. AskSenior Compiler Importer & Auto-Submitter Describes nearly the same job, smaller audience 62 users ★ 5.0
  4. Leetify for Codeforces Describes nearly the same job, with an established audience 20k users ★ 4.3
  5. Contest Tracker: Leetcode Describes nearly the same job, smaller audience 345 users ★ 4.0

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.

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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.