head to head · open source
Zen Browser vs servo
Zen Browser has 45,517 GitHub stars, 1,946 forks, 689 open issues and last shipped yesterday. servo has 38,301 stars, 3,865 forks, 3,209 open issues and last shipped yesterday. Zen Browser leads on adoption by 19% (45,517 vs 38,301 stars). Zen Browser is written in C++ under MPL-2.0; servo is written in Rust under MPL-2.0. Zen Browser has attracted 4% as many forks as stars, servo 10%. servo 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 | servo | |
|---|---|---|
| GitHub stars | ★ 46K | ★ 38K |
| License | MPL-2.0 | MPL-2.0 |
| Written in | C++ | Rust |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 1.9K | ⑂ 3.9K |
| 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 servo if
- You want the servo feature set and don't need the biggest community
- You prefer the MPL-2.0 license terms
- Your stack matches Rust
- You evaluated both and servo 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 servo
The Servo Parallel Browser Engine Project Servo is a prototype web browser engine written in the Rust language. It is currently developed on 64 bit macOS, 64 bit Linux, 64 bit Windows, 64 bit OpenHarmony, and Android. Servo welcomes contribution from everyone. Check out: The Servo Book for documentation servo.org for news and guides Coordination of Servo development happens: Here in the Github Issues On the Servo Zulip In video calls advertised in the Servo Project repo. Getting started For more detailed build instructions, see the Servo Book under [Getting the Code] and [Building Servo]. [Getting the Code]…
read the full servo overview →
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Frequently asked questions
Is Zen Browser or servo more popular?
Zen Browser has 45,517 GitHub stars and servo has 38,301. Zen Browser has the larger community by that measure.
Are Zen Browser and servo free?
Both are open source. Zen Browser is licensed under MPL-2.0 and servo under MPL-2.0. Neither carries a licence fee.
What is the difference between Zen Browser and servo?
Zen Browser is written in C++ and servo in Rust. 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 servo?
Choose Zen Browser if you want the larger community (45,517 stars) or its MPL-2.0 licence terms. Choose servo if its feature set, stack or MPL-2.0 licence fits better. Both are self-hostable.