WML is a free and extensible Webdesigner's off-line HTML
generation toolkit for Unix.
It consists of a control frontend driving up to nine
backends in a sequential pass-oriented filtering scheme.
Each backend provides one particular core language. For
maximum power, WML additionally ships with a well-suited
set of include files which provide higher-level features
built on top of the backend's core languages.
While not trivial and idiot proof, WML provides most of the
core features real hackers always wanted for HTML
generation.