cclive is a tool for downloading media from YouTube and similar websites. It has a low memory footprint compared to other existing tools. cclive works closely with the quvi project to work around to the flash technology that is being utilized by different media hosts to deliver the content.
Sub is a model for setting up shell programs that use subcommands, like git or rbenv using bash. Making a sub does not require you to write shell scripts in bash, you can write subcommands in any scripting language you prefer.
Perl Audio Converter is a tool for converting multiple audio types from one format to another.
mr is a Multiple Repository management tool. With lots of people using svn with no real reason to switch, and some people using git because it's the cool thing of the day, I need a way to be able to checkout and update from multiple repositories, in multiple revison control systems.