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Why Clearsilver?
Clearsilver Basics
   HDF Dataset
   Template Syntax
   CGI Kit
      Config Vars
API Reference
   C API
   Python API
   Perl API
   Java API

Comparison with PHP, ASP, JSP
Comparison with XML/XSLT




"... what the world needs now is another template system ..." -- Cracker, new verse to Teen Angst

ClearSilver is a fast, powerful, and language-neutral template system. It is designed to make it easy to create template driven static or dynamic websites.

ClearSilver is first and foremost designed to be extremely fast. It is coded completely in C and exported to your script language of choice (i.e. Python, Perl). As a result, it is notably faster than template systems written in a script language. However, its design has additional benefits. It is also one of the only template systems available which allows you to easily mix-and-match multiple programming languages with the same templates, even on the same page. This allows you to optimize your website by writing C-modules to handle speed-sensitive sections, while leaving the majority of your site in easy to write script code.


  • Fast, simple, language-neutral template system.
  • Modules currently available for C, Python, Perl.
  • Powerful template language supports variable substitution, template includes, conditionals, loops, macros, recursive macros, local variables.
  • Full CGI-handling kit with support for CGI/1.1, RFC 2388, automatic gzip compression, and other CGI standards.
  • "Pipelined" rendering model stores rendering data in an intermediate static dataset and makes debugging easier.
  • Separate your web application from its appearance.
  • Allow non-programmers access to edit parts of the site appearance.
  • Open Source and non-restrictive license

Copyright © 2009 Brandon Long, All rights reserved.