ClearSilver (http://www.clearsilver.net/) is a powerful and flexible HTML templating engine.

Unofficial windows builds of ClearSilver 0.9.14 are also available from http://clearsilver.yi.org/ as installers for Python 2.3 and 2.4.

'''Note:''' If you have to build the package yourself, be sure
to build a '''thread-safe''' version of the library.
Non thread-safe builds have been [/trac/ticket/1764#change_15 reported] 
to '''not''' work with Trac in a multi-threaded setup.