PluginStats
Atcoder Companion users statistics
By conlacda · Chrome Web Store · Tools
Enhance your experience by providing some useful features designed to streamline your workflow and boost your productivity.
Atcoder Companion has approximately 2,000 recorded users on Chrome Web Store.
It ranks #411 of 1,556 tracked Chrome Web Store listings by users.
It is rated 5.0 out of 5 from 10 ratings.
PluginStats has 1 daily observations since Oct 18, 2026; the latest is from Oct 18, 2026.
Rating: 5.00 / 5 from 10 ratings
About Atcoder Companion
Enhance your experience by providing some useful features designed to streamline your workflow and boost your productivity.
This extension offers some key features:
1. Estimate performance and rating during contests. 2. Add test cases to a problem statement (disabled by default, open the setting popup to enable). 3. Show the status of the problems you have submitted. 4. Allow copying and downloading test cases (each or all) with one click. 5. Simplify debugging with the custom test page.
Blog on Codeforces: https://codeforces.com/blog/entry/133287 Feel free to open an issue or submit a pull request on GitHub: https://github.com/conlacda/atcoder-companion
============================ 下記の機能を提供しています：
1. コンテスト開催中のパフォーマンス値やレーティングの表示（実験的な機能）。 2. 問題文にテストケースを追加（デフォルトでは無効ですが、設定ポップアップから有効にできます）。 3. 「問題」ページでの提出状況が確認できる。 4. テストケースのコピー・ダウンロードおよびコードテストを使ったデバッグができる。
バグが見つかった場合は、お知らせください 😃!!
Description from the Chrome Web Store listing.
Where Atcoder Companion sits in the listing
Each band is one page of 20. Users on a log scale. Placement is projected from users, so it can differ from the marketplace's own sort order. Hover a dot to see the listing.
Charts
Images: 30d · 1y · all time · 1600×900 dark
Adoption over time
7/30/90-day growth
Ranking history
Filled points are observed values; hollow points come from Internet Archive snapshots of the listing page. Dashed segments span periods with no observations — values between points are not interpolated.
Recent observations
Full history (1)Similar Chrome Web Store Tools plugins
Data source
User counts are read from public Chrome Web Store listing pages. Google displays rounded user counts (and caps the display at 10,000,000+), so small changes may not be visible. Rating counts above 1,000 are rounded (e.g. 1.6K).
Listing: https://chromewebstore.google.com/detail/atcoder-companion/bflhekmjlbpdlibcmojpikplaldgceec. First seen Oct 18, 2026; last successful collection Oct 18, 2026. See the methodology.