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AtCoder Unit Test

Chrome extension by YujiSoftware · Productivity · Developer

  • Featured
  • Established publisher

A Chrome extension in Productivity · Developer with 808 users, barely installed.

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
808
Rating
5.0 (1 ratings)
Users, last 16 days
+10
Rating, last 30 days
Not watched long enough to say
Version
3.1.0
Updated in the store
2024-03-19
Published
2016-04-16
Manifest
V3
Browser access
2 permissions, 1 site pattern

How it has moved

Users
+10 since 31.08
798-812 · 10 readings
  1. 2026-08-31798
  2. 2026-09-02808
  3. 2026-09-03807
  4. 2026-09-04806
  5. 2026-09-06812
  6. 2026-09-07811
  7. 2026-09-08805
  8. 2026-09-10806
  9. 2026-09-13799
  10. 2026-09-15808
Rating
unchanged since 31.08
reviewsrating 5.00 · 10 readings
  1. 2026-08-31reviews1rating5.00
  2. 2026-09-02reviews1rating5.00
  3. 2026-09-03reviews1rating5.00
  4. 2026-09-04reviews1rating5.00
  5. 2026-09-06reviews1rating5.00
  6. 2026-09-07reviews1rating5.00
  7. 2026-09-08reviews1rating5.00
  8. 2026-09-10reviews1rating5.00
  9. 2026-09-13reviews1rating5.00
  10. 2026-09-15reviews1rating5.00
Users
+10 since 31.08
798-812 · 10 readings
  1. 2026-08-31798
  2. 2026-09-02808
  3. 2026-09-03807
  4. 2026-09-04806
  5. 2026-09-06812
  6. 2026-09-07811
  7. 2026-09-08805
  8. 2026-09-10806
  9. 2026-09-13799
  10. 2026-09-15808
Rating
unchanged since 31.08
reviewsrating 5.00 · 10 readings
  1. 2026-08-31reviews1rating5.00
  2. 2026-09-02reviews1rating5.00
  3. 2026-09-03reviews1rating5.00
  4. 2026-09-04reviews1rating5.00
  5. 2026-09-06reviews1rating5.00
  6. 2026-09-07reviews1rating5.00
  7. 2026-09-08reviews1rating5.00
  8. 2026-09-10reviews1rating5.00
  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

Specific sites only: 1 match pattern.

  • *://atcoder.jp/contests/*/tasks/*
  • Put data on your clipboard clipboardWrite
  • 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

YujiSoftware publishes 5 listings we track, 14k users between them.

  1. Copy text with Alt-Click YujiSoftware · Productivity · Workflow · published 2016-02-15 10k users ★ 3.9
  2. Kindle bookshelf exporter YujiSoftware · Productivity · Workflow · published 2022-09-06 2k users ★ 4.2
  3. JavaAPI (Javadoc) Redirector YujiSoftware · Productivity · Developer · published 2017-07-19 889 users ★ 5.0
Show 1 more from this publisher
  1. Phishing Alert YujiSoftware · Make Chrome Yours · Privacy · published 2025-04-28 10 users

Like this one

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

  1. Atcoder Companion Describes nearly the same job, smaller audience 2k users ★ 5.0
  2. AtCoder In-Browser Playground Describes nearly the same job, smaller audience 22 users
  3. LeetCode Contest Helper Describes nearly the same job, smaller audience 50 users ★ 5.0
  4. Kattis Python Tester Describes nearly the same job, smaller audience 1 user
  5. LeetMollu Describes nearly the same job, smaller audience 4 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?

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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.