| Ladybird | |
|---|---|
 | |
.png) Ladybird, showing the main page of Wikipedia | |
| Original author | Andreas Kling |
| Developer | Ladybird Browser Initiative |
| Repository | |
| Written in | C++ |
| Engine | LibWeb |
| Operating system | Linux,macOS, and otherUnix-like operating systems. |
| Available in | English |
| Type | Web browser |
| License | BSD 2-Clause License |
| Website | ladybird |
Ladybird is anopen-sourceweb browser developed by theLadybird Browser Initiative, anonprofit organization focused on development of the browser.[1] It is licensed under theBSD 2-Clause License.[2] Analpha release is planned in 2026,[3][4]beta release is expected in 2027, and astable release for general public in 2028.[5] Originally a component ofSerenityOS, it is now being developed as a standalone project.[6] The initiative is funded entirely through donations, withCloudflare, FUTO,Shopify, and37signals among its sponsors.
Ladybird uses a newbrowser 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.[2] Anad blocking feature is planned.[7] Unlike most new web browsers, Ladybird does not rely on Chromium or Firefox and uses its ownrendering engine andJavaScript engine.[8]
The project was initially developed by theSerenityOS community using its internalsoftware 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.[9]
On June 30, 2024, Kling announced that he would be stepping back from the main project to focus solely on building the Ladybird browser.[10][6] In July 2024 the Ladybird Browser Initiative announced that it was being funded byChris Wanstrath, the co-founder ofGitHub.[7][4] Ladybird began receiving sponsorships to fund its development including from large companies such asShopify andProton VPN.[8]
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.[8] It also had the second most conformant JavaScript Engine after Firefox's SpiderMonkey.[8][11]
