head to head · open source
fingerprintjs vs hermes-browser-extension
fingerprintjs has 28,487 GitHub stars, 2,623 forks, 19 open issues and last shipped 3 days ago. hermes-browser-extension has 1,542 stars, 147 forks, 15 open issues and last shipped 4 days ago. fingerprintjs leads on adoption by 1,747% (28,487 vs 1,542 stars). fingerprintjs is written in TypeScript under MIT; hermes-browser-extension is written in JavaScript under MIT. fingerprintjs has attracted 9% as many forks as stars, hermes-browser-extension 10%. fingerprintjs 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
| fingerprintjs | hermes-browser-extension | |
|---|---|---|
| GitHub stars | ★ 28K | ★ 1.5K |
| License | MIT | MIT |
| Written in | TypeScript | JavaScript |
| Last push | 2026-09-17 | 2026-09-16 |
| Forks | ⑂ 2.6K | ⑂ 147 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick fingerprintjs if
- You weight community size — 28K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick hermes-browser-extension if
- You want the hermes-browser-extension feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches JavaScript
- You evaluated both and hermes-browser-extension fits your workflow better
About fingerprintjs
FingerprintJS is an open source, client side browser fingerprinting library that queries browser attributes and computes a hashed visitor identifier from them, aimed at web developers and engineering teams that need to recognise returning browsers without depending on cookies or local storage.
read the full fingerprintjs overview →
About hermes-browser-extension
Hermes Browser Extension is a Chrome, Edge, and Chromium side panel that connects the web page a user is viewing to a real Hermes Agent runtime, whether that runtime runs locally or on a gateway the user controls.
read the full hermes-browser-extension overview →
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Frequently asked questions
Is fingerprintjs or hermes-browser-extension more popular?
fingerprintjs has 28,487 GitHub stars and hermes-browser-extension has 1,542. fingerprintjs has the larger community by that measure.
Are fingerprintjs and hermes-browser-extension free?
Both are open source. fingerprintjs is licensed under MIT and hermes-browser-extension under MIT. Neither carries a licence fee.
What is the difference between fingerprintjs and hermes-browser-extension?
fingerprintjs is written in TypeScript and hermes-browser-extension 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, fingerprintjs or hermes-browser-extension?
Choose fingerprintjs if you want the larger community (28,487 stars) or its MIT licence terms. Choose hermes-browser-extension if its feature set, stack or MIT licence fits better. Both are self-hostable.