Here's some stuff I've done over the years.

• rBoard - Very simple web forum written in Ruby. Uses eruby and modruby on an apache webserver. These were all obsoleted long ago by Ruby on Rails, but it still demonstrates how to use cgi, talk to a database, and deal with sessions using Ruby.
• rSort - Implementations and explanations of the sort algorithms you learned in Comp Sci 101. Ruby already has excellent sorting functionality built-in, so this is probably only good for beginning CS students who are looking for a straightforward implementation to use in learning. Albert Davidson Chou contributed to this project.
• Discordian Society Super-Secret Cryptographic Cypher Code - fnord in Ruby
• DS3C3 as a working cgi script in perl

: The hierarchy is excessive. So is the anarchy. :-) -- Larry Wall in <199705101952.MAA00756@wall.org>