head to head · open source
Zen Browser vs keyFinder
Zen Browser has 45,509 GitHub stars, 1,943 forks, 689 open issues and last shipped yesterday. keyFinder has 729 stars, 128 forks, 5 open issues and last shipped 10 days ago. Zen Browser leads on adoption by 6,143% (45,509 vs 729 stars). Zen Browser is written in C++ under MPL-2.0; keyFinder is written in JavaScript under MIT. Zen Browser has attracted 4% as many forks as stars, keyFinder 18%. 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 | keyFinder | |
|---|---|---|
| GitHub stars | ★ 46K | ★ 729 |
| License | MPL-2.0 | MIT |
| Written in | C++ | JavaScript |
| Last push | 2026-11-02 | 2026-10-24 |
| Forks | ⑂ 1.9K | ⑂ 128 |
| 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 keyFinder if
- You want the keyFinder feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches JavaScript
- You evaluated both and keyFinder 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 keyFinder
KeyFinder Passive API key and secret discovery for Chrome and Firefox KeyFinder is a browser extension for Chrome and Firefox that passively scans every page you visit for leaked API keys, tokens, secrets, and credentials. It runs silently in the background with zero configuration required. What It Detects KeyFinder ships with 80+ detection patterns covering secrets from: How It Works KeyFinder scans 10 different attack surfaces on every page: 1. Script src URLs Checks all script source URLs for keywords and tokens in query parameters 2. Inline scripts Scans tag contents for secret patterns 3. External scripts…
read the full keyFinder overview →
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Frequently asked questions
Is Zen Browser or keyFinder more popular?
Zen Browser has 45,509 GitHub stars and keyFinder has 729. Zen Browser has the larger community by that measure.
Are Zen Browser and keyFinder free?
Both are open source. Zen Browser is licensed under MPL-2.0 and keyFinder under MIT. Neither carries a licence fee.
What is the difference between Zen Browser and keyFinder?
Zen Browser is written in C++ and keyFinder 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 keyFinder?
Choose Zen Browser if you want the larger community (45,509 stars) or its MPL-2.0 licence terms. Choose keyFinder if its feature set, stack or MIT licence fits better. Both are self-hostable.