webgen – Static Website Generator
http://webgen.rubyforge.org/index.html

webgen is used to generate web pages from page and template files. You create one or more template files in which you define the layout of your page and where the content should go. After that you create page files in which you only define the content. When webgen is run it combines the template with each of the page files and generates the HTML output files. During this process special tags are substituted so that, for example, a menu is generated. Actually, this website was generated with webgen and, for example, the menu that you can see was created dynamically. This whole site was generated with webgen and provides an online demonstration of its features. This has been added to World Wide Web Reference Subject Tracer™ Information Blog.