head to head · open source
Zen Browser vs eventemitter3
Zen Browser has 45,517 GitHub stars, 1,946 forks, 689 open issues and last shipped yesterday. eventemitter3 has 3,535 stars, 237 forks, 22 open issues and last shipped 10 months ago. Zen Browser leads on adoption by 1,188% (45,517 vs 3,535 stars). Zen Browser is written in C++ under MPL-2.0; eventemitter3 is written in JavaScript under MIT. Zen Browser has attracted 4% as many forks as stars, eventemitter3 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 | eventemitter3 | |
|---|---|---|
| GitHub stars | ★ 46K | ★ 3.5K |
| License | MPL-2.0 | MIT |
| Written in | C++ | JavaScript |
| Last push | 2026-11-02 | 2026-01-19 |
| Forks | ⑂ 1.9K | ⑂ 237 |
| 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 eventemitter3 if
- You want the eventemitter3 feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches JavaScript
- You evaluated both and eventemitter3 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 eventemitter3
EventEmitter3 EventEmitter3 is a high performance EventEmitter. It has been micro optimized for various of code paths making this, one of, if not the fastest EventEmitter available for Node.js and browsers. The module is API compatible with the EventEmitter that ships by default with Node.js but there are some slight differences: Domain support has been removed. We do not throw an error when you emit an error event and nobody is listening. The newListener and removeListener events have been removed as they are useful only in some uncommon use cases. The setMaxListeners , getMaxListeners , prependListener and…
read the full eventemitter3 overview →
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Frequently asked questions
Is Zen Browser or eventemitter3 more popular?
Zen Browser has 45,517 GitHub stars and eventemitter3 has 3,535. Zen Browser has the larger community by that measure.
Are Zen Browser and eventemitter3 free?
Both are open source. Zen Browser is licensed under MPL-2.0 and eventemitter3 under MIT. Neither carries a licence fee.
What is the difference between Zen Browser and eventemitter3?
Zen Browser is written in C++ and eventemitter3 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 eventemitter3?
Choose Zen Browser if you want the larger community (45,517 stars) or its MPL-2.0 licence terms. Choose eventemitter3 if its feature set, stack or MIT licence fits better. Both are self-hostable.