head to head · open source
Ladybird vs fingerprintjs
Ladybird has 66,237 GitHub stars, 3,163 forks, 535 open issues and last shipped yesterday. fingerprintjs has 28,466 stars, 2,621 forks, 19 open issues and last shipped yesterday. Ladybird leads on adoption by 133% (66,237 vs 28,466 stars). Ladybird is written in C++ under BSD-2-Clause; fingerprintjs is written in TypeScript under MIT. Ladybird has attracted 5% as many forks as stars, fingerprintjs 9%. Ladybird was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (browser), so they are genuine substitutes rather than adjacent tools.
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
| Ladybird | fingerprintjs | |
|---|---|---|
| GitHub stars | ★ 66K | ★ 28K |
| License | BSD-2-Clause | MIT |
| Written in | C++ | TypeScript |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 3.2K | ⑂ 2.6K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Ladybird if
- You weight community size — 66K stars and counting
- You want the BSD-2-Clause license terms
- Your stack matches C++
- You value the larger contributor base for long-term maintenance
pick fingerprintjs if
- You want the fingerprintjs feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and fingerprintjs fits your workflow better
About Ladybird
Ladybird is a truly independent web browser and browser engine, written from scratch in C++ rather than as a fork of any existing engine, and it is built for developers who want to work on a browser engine based on web standards while it remains in a pre alpha state.
read the full Ladybird overview →
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 →
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Frequently asked questions
Is Ladybird or fingerprintjs more popular?
Ladybird has 66,237 GitHub stars and fingerprintjs has 28,466. Ladybird has the larger community by that measure.
Are Ladybird and fingerprintjs free?
Both are open source. Ladybird is licensed under BSD-2-Clause and fingerprintjs under MIT. Neither carries a licence fee.
What is the difference between Ladybird and fingerprintjs?
Ladybird is written in C++ and fingerprintjs in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Ladybird or fingerprintjs?
Choose Ladybird if you want the larger community (66,237 stars) or its BSD-2-Clause licence terms. Choose fingerprintjs if its feature set, stack or MIT licence fits better. Both are self-hostable.