Wikitext 1.0.3 released
I just pushed out a minor maintenance release of my wikitext module, version 1.0.3. Wikitext is a fast wikitext-to-HTML translator with a syntax very close to that used by MediaWiki. It is a Ruby extension written with speed and robustness in mind using a Ragel-generated scanner and a hand-coded parser, all in C. It has an enormous spec suite.
You can browse the source code repo, or download the gem from the RubyForge downloads page. For an overview check out the RDoc here. After a few hours it should propagate out to the mirrors and you'll be able to install it with sudo gem install wikitext.