Libxslt

libxslt is the XSLT C library developed for the GNOME project. It provides an implementation of XSLT 1.0, plus most of the EXSLT set of processor-portable extensions functions and some of Saxon's evaluate and expressions extensions. libxslt is based on libxml2, which it uses for XML parsing, tree manipulation and XPath support. It is free software released under the MIT License and can be reused in commercial applications.

libxslt

Initial release	September 23, 1999; 25 years ago (1999-09-23)
Stable release	1.1.43[1]  / 13 March 2025; 56 days ago (13 March 2025)
Repository	gitlab.gnome.org/GNOME/libxslt
Written in	C
Operating system	Unix-like, Windows, CygWin, Mac OS, AmigaOS, RISC OS, OS/2, VMS, QNX, MVS...
Type	XSLT
License	MIT License
Website	xmlsoft.org

libxslt can be used either as library embedded into an application, or via the xsltproc command line tool. The integration into applications is eased by a multitude of language bindings and wrappers. Being written in C, libxslt is a fast and low-resource processor.^[2][3][4] This makes it a popular choice for DocBook formatting^[5] and as standard XSLT processor for programming languages like PHP,^[6] Perl^[7] or Python.^[8]

The WebKit layout engine (used e.g. in the Apple Safari web browser) uses the libxslt library to do XSL transformations.^[9]

See also

• Free and open-source software portal

• libxml2
• Saxon XSLT (competitor)
• Xalan (competitor)