Taru is appointment scheduler that was designed for use within a university for scheduling demo times between course assistants and students. It includes support for calendar synchronization with iCal and Google. Taru means "to be sufficient, to be enough" in Japanese and "myth" in Finnish.
myarray is a simple little library that implements arbitrarily-sized homogeneous arrays, meaning that they can only store one type of element each. This type is specified by the programmer whenever an array is created. It was made to resemble GLib's GArray, so its usage should be similar.
Struct::Compare is a Perl module that compares two values of any type and structure and returns true if they are the same. It does a deep comparison of the structures, so a hash of a hash of a whatever will be compared correctly. This is especially useful for writing unit tests for your modules.
Rcss implements CSS-SSC (CSS Server-Side Constants) in Ruby. Its features include the processing of rich CSS files using ERB templates, server-side constants, and server-side classes (preliminary). It plugs-in seamlessly to any Rails application but also allows the processing of Rcss files off-line using a command line executable.