The stylesheets often referred to simply as "the DocBook stylesheets" come in two flavors:
DocBookDssslStylesheets, for use with the Jade/Openjade DSSSL engine
DocBookXslStylesheets, for use with various XSLT engines
Those are stylesheets for transforming DocBook into some other format, such as:
- HTML
- XSL-FO
- nroff (man) pages
OASIS OpenDocument (docbook2odf)
- ...
The are also DocBookCssStylesheets, which are mainly useful for controlling direct rendering of DocBook XML documents in Web browsers and in certain WYSIWYG XML editors.