head to head · open source
Zen Browser vs competitive-companion
Zen Browser has 45,517 GitHub stars, 1,946 forks, 689 open issues and last shipped yesterday. competitive-companion has 1,339 stars, 220 forks, 90 open issues and last shipped 3 days ago. Zen Browser leads on adoption by 3,299% (45,517 vs 1,339 stars). Zen Browser is written in C++ under MPL-2.0; competitive-companion is written in TypeScript under MIT. Zen Browser has attracted 4% as many forks as stars, competitive-companion 16%. Zen Browser was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Zen Browser | competitive-companion | |
|---|---|---|
| GitHub stars | ★ 46K | ★ 1.3K |
| License | MPL-2.0 | MIT |
| Written in | C++ | TypeScript |
| Last push | 2026-11-02 | 2026-10-31 |
| Forks | ⑂ 1.9K | ⑂ 220 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Zen Browser if
- You weight community size — 46K stars and counting
- You want the MPL-2.0 license terms
- Your stack matches C++
- You value the larger contributor base for long-term maintenance
pick competitive-companion if
- You want the competitive-companion feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and competitive-companion fits your workflow better
About Zen Browser
Zen Browser Zen is a firefox based browser with the aim of pushing your productivity to a new level! Download • Website • Documentation • Release Notes Firefox Versions Release Is currently built using Firefox version 155.0.1 ! Twilight Is currently built using Firefox version RC 155.0.1 ! Contributing If you'd like to report a bug, please do so on our GitHub Issues page and for feature requests, you can use GitHub Discussions. Zen is an open source project, and we welcome contributions from the community! Please take a look at the contribution guidelines before getting started! Partners Thanks to all the…
read the full Zen Browser overview →
About competitive-companion
Competitive Companion [link cws]: [link amo]: [ ][link cws] [ ][link cws] [ ][link cws] [ ][link amo] [ ][link amo] [ ][link amo] A browser extension which parses competitive programming problems from various online judges (like AtCoder and Codeforces) and sends them to various tools (like CP Editor and CPH). Capable of parsing problems and contests and extracting data like the example testcases and the time and memory constraints. Install [ Chrome extension][link cws] [ ][link cws] [ Firefox add on][link amo] [ ][link amo] Tools that use Competitive Companion acmX AI Virtual Assistant Assistant.nvim AutoCp…
read the full competitive-companion overview →
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Frequently asked questions
Is Zen Browser or competitive-companion more popular?
Zen Browser has 45,517 GitHub stars and competitive-companion has 1,339. Zen Browser has the larger community by that measure.
Are Zen Browser and competitive-companion free?
Both are open source. Zen Browser is licensed under MPL-2.0 and competitive-companion under MIT. Neither carries a licence fee.
What is the difference between Zen Browser and competitive-companion?
Zen Browser is written in C++ and competitive-companion in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Zen Browser or competitive-companion?
Choose Zen Browser if you want the larger community (45,517 stars) or its MPL-2.0 licence terms. Choose competitive-companion if its feature set, stack or MIT licence fits better. Both are self-hostable.