Xee is an innovative project that introduces an open source implementation of XSLT 3 and XPath 3, addressing a long-standing gap in contemporary processing tools outside of Java and .NET environments. There's a notable demand for modern XSLT and XPath versions, as many projects still rely on outdated technologies due to the lack of alternatives. The support of XSLT across major browsers remains strong, pointing to its ongoing relevance. The ability for Xee to compile in WebAssembly (WASM) is also an advantage, especially amid discussions about removing libxml and XSLT support for security reasons. This project signifies a positive step in the evolution of fundamental software tools, offering new opportunities for developers and content managers interested in leveraging more advanced XML processing capabilities.