Hot, great and complex
- Hoa, a set of PHP library,
- atoum, a testing framework for PHP,
- Tagua VM, a PHP virtual machine written in Rust,
- Atlasr, a truly open-source and free map browser,
- php-ext-wasm, a PHP extension to run WebAssembly binaries,
- sabre/*, a CalDAV, CardDAV, and WebDAV server,
- Rust parser for Gutenberg.