XSL Lint
Information on the software’s applications, experimental releases of the current version and a link to references.
XSL Transformations
Recommendation by W3C; with details on stylesheet structure, data model and expressions along with template rules, creating the result tree and extensions.
XSLT Requirements Version 2.0
Shows the specification of XSLT 2.0; with particulars on XML standards, date formatting functions and an example document as well as XXML Schema and multi-level grouping.