head to head · open source
Zen Browser vs keyFinder
Zen Browser has 44,486 GitHub stars, 1,755 forks, 689 open issues and last shipped 2 days ago. keyFinder has 716 stars, 125 forks, 5 open issues and last shipped 2 months ago. Zen Browser leads on adoption by 6,113% (44,486 vs 716 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 17%. 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 | ★ 44K | ★ 716 |
| License | MPL-2.0 | MIT |
| Written in | C++ | JavaScript |
| Last push | 2026-09-17 | 2026-07-19 |
| Forks | ⑂ 1.8K | ⑂ 125 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Zen Browser if
- You weight community size — 44K 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 is a privacy focused, open source web browser built on Firefox’s Gecko engine. It inherits Firefox’s compatibility and extension ecosystem while introducing a streamlined interface and productivity oriented features. The project lives in the desktop browser ecosystem, targeting users who want a Firefox based experience with reduced clutter and enhanced customization.
read the full Zen Browser overview →
About keyFinder
KeyFinder is an MIT licensed browser extension for Chrome and Firefox that passively scans every page a visitor loads for leaked API keys, tokens, secrets, and credentials across more than 80 detection patterns with zero configuration, built for security engineers, penetration testers, bug bounty hunters, and developers who need to catch exposed credentials as they browse.
read the full keyFinder overview →
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Frequently asked questions
Is Zen Browser or keyFinder more popular?
Zen Browser has 44,486 GitHub stars and keyFinder has 716. 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 (44,486 stars) or its MPL-2.0 licence terms. Choose keyFinder if its feature set, stack or MIT licence fits better. Both are self-hostable.