head to head · open source
Ladybird vs UserAgent-Switcher
Ladybird has 66,807 GitHub stars, 3,194 forks, 535 open issues and last shipped yesterday. UserAgent-Switcher has 1,543 stars, 200 forks, 150 open issues and last shipped 3 days ago. Ladybird leads on adoption by 4,230% (66,807 vs 1,543 stars). Ladybird is written in C++ under BSD-2-Clause; UserAgent-Switcher is written in JavaScript under MPL-2.0. Ladybird has attracted 5% as many forks as stars, UserAgent-Switcher 13%. Ladybird 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
| Ladybird | UserAgent-Switcher | |
|---|---|---|
| GitHub stars | ★ 67K | ★ 1.5K |
| License | BSD-2-Clause | MPL-2.0 |
| Written in | C++ | JavaScript |
| Last push | 2026-11-02 | 2026-10-31 |
| Forks | ⑂ 3.2K | ⑂ 200 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Ladybird if
- You weight community size — 67K 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 UserAgent-Switcher if
- You want the UserAgent-Switcher feature set and don't need the biggest community
- You prefer the MPL-2.0 license terms
- Your stack matches JavaScript
- You evaluated both and UserAgent-Switcher fits your workflow better
About Ladybird
Ladybird Ladybird is a truly independent web browser, using a novel engine based on web standards. [!IMPORTANT] Ladybird is in a pre alpha state, and only suitable for use by developers Features We aim to build a complete, usable browser for the modern web. Ladybird uses a multi process architecture with a main UI process, several WebContent renderer processes, an ImageDecoder process, and a RequestServer process. Image decoding and network connections are done out of process to be more robust against malicious content. Each tab has its own renderer process, which is sandboxed from the rest of the system. At the…
read the full Ladybird overview →
About UserAgent-Switcher
UserAgent Switcher A highly configurable browser extension for spoofing your User Agent string. UserAgent Switcher modifies both the User Agent in your browser's request headers and relevant JavaScript navigator properties (e.g., navigator.userAgent , navigator.appVersion , navigator.platform ). It also supports modern browser identification mechanisms such as Client Hints headers and the navigator.userAgentData object, ensuring consistent and comprehensive spoofing across all detection methods. Key Features Comprehensive Spoofing: Modifies both HTTP request headers and JavaScript navigator objects. Granular…
read the full UserAgent-Switcher overview →
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Frequently asked questions
Is Ladybird or UserAgent-Switcher more popular?
Ladybird has 66,807 GitHub stars and UserAgent-Switcher has 1,543. Ladybird has the larger community by that measure.
Are Ladybird and UserAgent-Switcher free?
Both are open source. Ladybird is licensed under BSD-2-Clause and UserAgent-Switcher under MPL-2.0. Neither carries a licence fee.
What is the difference between Ladybird and UserAgent-Switcher?
Ladybird is written in C++ and UserAgent-Switcher 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, Ladybird or UserAgent-Switcher?
Choose Ladybird if you want the larger community (66,807 stars) or its BSD-2-Clause licence terms. Choose UserAgent-Switcher if its feature set, stack or MPL-2.0 licence fits better. Both are self-hostable.