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Ladybird (web browser)
Open-source web browser

Ladybird is an open-source web browser developed by the Ladybird Browser Initiative, a nonprofit organization focused on development of the browser. It is licensed under the BSD 2-Clause License. An alpha release is planned in 2026, beta release is expected in 2027 and a stable release for general public in 2028. Originally a component of SerenityOS, it is now being developed as a standalone project.

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Features

Ladybird uses a new browser engine called LibWeb that is being created from scratch by the development team. Unlike SerenityOS, it will also use other open source libraries for development.7 An ad blocking feature is planned.8 Unlike most new web browsers, Ladybird does not rely on Chromium or Firefox and uses its own rendering engine and JavaScript engine.9

History

The project was initially developed by the SerenityOS community using its internal software libraries implementing specific features (with self-descriptive names prefixed with “Lib”, e.g. LibWeb, LibHTTP, LibJS, or LibWasm).

Ladybird was announced by Andreas Kling, the maintainer and founder of the SerenityOS project, in September 2022.10

On June 30, 2024, Kling announced that he would be stepping back from the main project to focus solely on building the Ladybird browser.1112 In July 2024 the Ladybird Browser Initiative announced that it was being funded by Chris Wanstrath, the co-founder of GitHub.13 Ladybird began receiving sponsorships to fund its development including from large companies such as Shopify and Proton VPN.14

As of March 2025, it ranked fourth highest on the Web Platform Tests, a suite of tests used by browser developers, below Chrome, Safari and Firefox.15 It also had the second most conformant JavaScript Engine after Firefox's SpiderMonkey.16

References

  1. LadybirdBrowser/ladybird, Ladybird, 2024-08-07, archived from the original on 2024-08-06, retrieved 2024-08-07 https://github.com/LadybirdBrowser/ladybird ↩

  2. Kling, Andreas. "Announcing the Ladybird Browser Initiative". ladybird.org. Retrieved 2024-08-07. https://ladybird.org/posts/announcement/ ↩

  3. Anderson, Tim (2024-07-03). "Ladybird web browser now funded by GitHub co-founder, promises 'no code' from rivals". DEVCLASS. Archived from the original on 2024-09-20. Retrieved 2024-09-20. https://devclass.com/2024/07/03/ladybird-web-browser-project-now-funded-by-github-co-founder-promises-no-code-from-other-browsers/ ↩

  4. Kling, Andreas. "Ladybird FAQ's". ladybird.org. Retrieved 2024-08-21. https://ladybird.org/#faq ↩

  5. World Wide Web Consortium (2024-09-25). "🐞Ladybird: A new, independent browser engine — written from scratch". w3.org. Archived from the original on 2024-09-17. Retrieved 2024-11-03. https://www.w3.org/events/meetings/8e1ca708-fdbf-4264-a79b-4c953fa85248/ ↩

  6. "Fork! Ladybird Browser And SerenityOS To Go Separate Ways". Hackaday. July 2, 2024. https://hackaday.com/2024/07/02/fork-ladybird-browser-and-serenityos-to-go-separate-ways/ ↩

  7. Anderson, Tim (2024-07-03). "Ladybird web browser now funded by GitHub co-founder, promises 'no code' from rivals". DEVCLASS. Archived from the original on 2024-09-20. Retrieved 2024-09-20. https://devclass.com/2024/07/03/ladybird-web-browser-project-now-funded-by-github-co-founder-promises-no-code-from-other-browsers/ ↩

  8. Förster, Moritz (July 4, 2024). "Ladybird web browser takes off: One million US dollars from GitHub founder". Heise. Retrieved 2024-09-20. https://www.heise.de/en/article/Ladybird-web-browser-takes-off-One-million-US-dollars-from-GitHub-founder-9789840.html ↩

  9. Conway, Adam (12 March 2025). "4 reasons Ladybird is the most exciting new browser currently in development". XDA. https://www.xda-developers.com/reasons-ladybird-exciting-new-browser/ ↩

  10. "Ladybird browser spreads its wings". LWN.net. Archived from the original on 2024-09-26. Retrieved 2024-11-22. https://lwn.net/Articles/976822/ ↩

  11. Proven, Liam (17 October 2023). "Serenity OS turns five and emits first offspring, Ladybird". The Register. Retrieved 8 August 2024. https://www.theregister.com/2023/10/17/serenity_os_turns_five/ ↩

  12. "Fork! Ladybird Browser And SerenityOS To Go Separate Ways". Hackaday. July 2, 2024. https://hackaday.com/2024/07/02/fork-ladybird-browser-and-serenityos-to-go-separate-ways/ ↩

  13. Förster, Moritz (July 4, 2024). "Ladybird web browser takes off: One million US dollars from GitHub founder". Heise. Retrieved 2024-09-20. https://www.heise.de/en/article/Ladybird-web-browser-takes-off-One-million-US-dollars-from-GitHub-founder-9789840.html ↩

  14. Conway, Adam (12 March 2025). "4 reasons Ladybird is the most exciting new browser currently in development". XDA. https://www.xda-developers.com/reasons-ladybird-exciting-new-browser/ ↩

  15. Conway, Adam (12 March 2025). "4 reasons Ladybird is the most exciting new browser currently in development". XDA. https://www.xda-developers.com/reasons-ladybird-exciting-new-browser/ ↩

  16. Conway, Adam (12 March 2025). "4 reasons Ladybird is the most exciting new browser currently in development". XDA. https://www.xda-developers.com/reasons-ladybird-exciting-new-browser/ ↩