For questions relating to the Saxon/C product - a variant of Saxonica's XSLT and XQuery processor designed to be used from C, C++, PHP, or Python applications. Use the tag for both the open source (HE) and commercial (PE, EE) editions of the product.
You can find SaxonC 11.4, the latest stable release as of January 2023, at https://www.saxonica.com/download/c.xml, the documentation, as far as installing SaxonC and using its C/C++ or Python or PHP APIs is concerned, is at https://www.saxonica.com/saxon-c/documentation11/index.html#!starting, otherwise, for XSLT, XPath, XQuery reference the normal Saxon 11 documentation at https://www.saxonica.com/html/documentation11/about/index.html helps.
However, on January 13th, 2023, SaxonC 12.0 was released, reengineered to no longer rely on the defunct ExcelsiorJET but built using GraalVM instead. It continues to provide a C/C++, PHP and Python API, the Saxonica product is downloadable from https://www.saxonica.com/download/c.xml and documented at https://www.saxonica.com/saxon-c/documentation12/index.html, with the various APIs at https://www.saxonica.com/saxon-c/documentation12/index.html#!api/saxon_c_cpp_api and https://www.saxonica.com/saxon-c/documentation12/index.html#!api/saxon_c_php_api and https://www.saxonica.com/saxon-c/documentation12/index.html#!api/saxon_c_python_api, respectively.
Furthermore, for Python all three editions of SaxonC 12, i.e. HE, PE, and EE, are now also available on PyPi for easy installation with pip e.g. python3 -m pip install saxonche, python3 -m pip install saxoncpe or python3 -m pip install saxoncee, respectively.
The previous release is Saxon-C 1.2.1, based on Saxon Java 9.9, is available at https://www.saxonica.com/saxon-c/index.xml#archive and documented at https://www.saxonica.com/saxon-c/documentation1.2/index.html.
The Saxonica SaxonC bug tracker is at https://saxonica.plan.io/projects/saxon-c/issues, the Saxonica SaxonC forum at https://saxonica.plan.io/projects/saxon-c/boards.
