head to head · open source
Zen Browser vs testcafe
Zen Browser has 45,517 GitHub stars, 1,946 forks, 689 open issues and last shipped yesterday. testcafe has 9,894 stars, 674 forks, 42 open issues and last shipped 4 days ago. Zen Browser leads on adoption by 360% (45,517 vs 9,894 stars). Zen Browser is written in C++ under MPL-2.0; testcafe is written in JavaScript under MIT. Zen Browser has attracted 4% as many forks as stars, testcafe 7%. 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 | testcafe | |
|---|---|---|
| GitHub stars | ★ 46K | ★ 9.9K |
| License | MPL-2.0 | MIT |
| Written in | C++ | JavaScript |
| Last push | 2026-11-02 | 2026-10-30 |
| Forks | ⑂ 1.9K | ⑂ 674 |
| 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 testcafe if
- You want the testcafe feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches JavaScript
- You evaluated both and testcafe 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 testcafe
Automate end to end web testing with TestCafe, a Node.js based testing framework. TestCafe is free and as easy to use as 1 2 3 : 1. Write your tests in JS or TypeScript. 2. Execute your tests. 3. View test results. Homepage • Documentation • FAQ • Support Works on all popular environments : TestCafe runs on Windows, MacOS, and Linux. It supports desktop, mobile, remote and cloud browsers (UI or headless). 1 minute to set up : You do not need WebDriver or any other testing software. Install TestCafe with one command, and you are ready to test: npm install g testcafe Free and open source : TestCafe is free to use…
read the full testcafe overview →
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Frequently asked questions
Is Zen Browser or testcafe more popular?
Zen Browser has 45,517 GitHub stars and testcafe has 9,894. Zen Browser has the larger community by that measure.
Are Zen Browser and testcafe free?
Both are open source. Zen Browser is licensed under MPL-2.0 and testcafe under MIT. Neither carries a licence fee.
What is the difference between Zen Browser and testcafe?
Zen Browser is written in C++ and testcafe in JavaScript. 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 testcafe?
Choose Zen Browser if you want the larger community (45,517 stars) or its MPL-2.0 licence terms. Choose testcafe if its feature set, stack or MIT licence fits better. Both are self-hostable.