AtCoder Contest Kit
Chrome extension by Tunnelトンネル · Productivity · Tools
A Chrome extension in Productivity · Tools with 1 users, barely installed.
Specific sites only: 1 match pattern.
What the developer says, and 5 screenshots
Loading from the Chrome Web Store. Open the listing if it does not appear.
- Users
- 1
- Users, last 26 days
- +1
- Version
- 0.3.0
- Updated in the store
- 2026-10-05
- Published
- 2026-10-05
- Manifest
- V3
- Browser access
- 2 permissions, 1 site pattern
How it has moved
- 2026-10-060appeared in the store
- 2026-10-191
- 2026-10-242
- 2026-10-281
- 2026-10-311
- 2026-10-060appeared in the store
- 2026-10-191
- 2026-10-242
- 2026-10-281
- 2026-10-311
A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing up to 2 times 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.
https://atcoder.jp/*
-
Read what you have copied
clipboardRead -
Store data in your browser
storage
What changed recently
- Appeared in the store
The publisher
Tunnelトンネル publishes 9 listings we track, 217 users between them.
-
Close tab in contextMenu 137 users
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Netkeiba → JRA リダイレクト 32 users
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New tab in contextMenu 14 users
Show 5 more from this publisher
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ChatGPT Auto QQ Method 8 users
-
Gmail Popup for OTP 7 users
-
Netkeiba → Studbook Linker and Searcher 6 users
-
Netkeibaレース映像をYouTubeで検索する拡張機能 6 users
-
Search_on_Youtube 6 users
Like this one
Listings the catalog judges closest in what they say they do.
-
Atcoder Companion 2k users
-
AtCoder Extension 871 users
-
AtCoder Parallel Alert 12 users
-
AtCoder statement formatter 20 users
-
AtCoder In-Browser Playground 25 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.
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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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The badge shows the audience and rating from our last pass over the store and links back to this page.
[](https://extops.dev/extensions/eabggolgldjmbeafgjbiokdanmjnlbml)<a href="https://extops.dev/extensions/eabggolgldjmbeafgjbiokdanmjnlbml"><img src="https://extops.dev/extensions/eabggolgldjmbeafgjbiokdanmjnlbml/badge.svg" alt="Users and rating on Ext Ops Panel" height="20"></a>Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-10-28. We publish no contact details for extension developers.