Competitive Companion by Jasper van Merle

Competitive Companion parses competitive programming problems and contests and is capable of sending the parsed data to various tools like CHelper and Hightail.

Using it is very simple. Just install the extension, make sure you got one of the supported tools open, navigate to a problem page and click on the green plus icon in the top-left of your browser. On websites where Competitive Companion is able to parse contests, navigating to the page with all the problems and clicking on the green plus icon will download and parse all problems in the contest at once. You can also use the Ctrl+Shift+U shortcut instead of the green plus icon (configurable on about:addons > Cog > Manage Extension Shortcuts).

Supported tools:
- CHelper
- JHelper
- Hightail
- Mind Sport
- Caide
- acmX
- Competitive Programming Helper
- CP Editor
- AI Virtual Assistant
- cpbooster
- Competitive Programming Gradle Plugin
- C+++ IDE
- cphelper.nvim
- AutoCp
- Any other tool that can parse the data that is being sent, read more about that in the README on GitHub, and have a look at the example project here.

Problem parsers are available for the following websites:
- ACMP
- Aizu Online Judge
- Anarchy Golf
- AtCoder
- Baekjoon Online Judge
- Bloomberg CodeCon
- CodeChef
- CodeDrills
- Codeforces
- CodeMarshal
- COJ
- Contest Hunter
- CS Academy
- CSES
- CSU-ACM Online Judge
- DevSkill
- DMOJ
- E-Olymp
- ECNU Online Judge
- Facebook Coding Competitions
- FZU Online Judge
- Google Coding Competitions
- HackerEarth
- HackerRank
- HDOJ
- HIT Online Judge
- hihoCoder
- Hrbust Online Judge
- ICPC Live Archive
- Jutge
- Kattis
- Library Checker
- LibreOJ
- LightOJ
- Luogu
- mrJudge
- MSK Informatics
- Neps Academy
- NowCoder
- NYTD Online Judge
- omegaUp
- Panda Online Judge
- PEG Judge
- POJ
- QDUOJ
- SPOJ
- SSOIER
- Timus
- TLX
- Toph
- UOJ
- URI Online Judge
- USACO
- USACO Training
- UVa Online Judge
- Virtual Judge
- XXM
- Yandex
- yukicoder

Contest parsers are available for the following websites:
- AtCoder
- Baekjoon Online Judge
- CodeChef
- Codeforces
- CodeMarshal
- COJ
- Contest Hunter
- CSES
- CSU-ACM Online Judge
- DevSkill
- DMOJ
- E-Olymp
- ECNU Online Judge
- FZU Online Judge
- HackerEarth
- HackerRank
- HDOJ
- hihoCoder
- Kattis
- LibreOJ
- NYTD Online Judge
- PEG Judge
- POJ
- QDUOJ
- Timus
- UOJ
- URI Online Judge
- Yandex
- yukicoder