| Ladybird | |
|---|---|
| | |
| 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 other Unix-like operating systems. |
| Available in | English |
| Type | Web browser |
| License | BSD 2-Clause License |
| Website | ladybird |
Ladybird is an open-source web browser developed by the Ladybird Browser Initiative, a nonprofit organization focused on development of the browser. [1] It is licensed under the BSD 2-Clause License. [2] An alpha release is planned in 2026, [3] [4] beta release is expected in 2027, and a stable release for general public in 2028. [5] Originally a component of SerenityOS, it is now being developed as a standalone project. [6] The initiative is funded entirely through donations, with Cloudflare, FUTO, Shopify, and 37signals among its sponsors.
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. [2] An ad blocking feature is planned. [7] Unlike most new web browsers, Ladybird does not rely on Chromium or Firefox and uses its own rendering engine and JavaScript engine. [8]
The project was initially developed by the SerenityOS community [9] 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. [9] [6] In July 2024 the Ladybird Browser Initiative announced that it was being funded by Chris Wanstrath, the co-founder of GitHub. [7] [4] Ladybird began receiving sponsorships to fund its development including from large companies such as Shopify and Proton 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]