These are some of my own projects. I decided to publish them as open source. They are well tested because I use them myself every day. Maybe you like one of them.
Most of them I made availabe as a Ruby Gem. The easiest way to install them (and their dependencies) is to add this address to your gem server list: Bertram Scharpf Gems.
And here they come:
RbFind: Like the Unix 'find' tool, but using Ruby expressions.
Ruby-PgSQL: Yet another Ruby PostgreSQL library.
Ruby-Supplement: Some Ruby methods I am still proposing for the standard.
Hermes: Easy CGI and mail generation and handling
Autorake: A build tool used by the above projects.
Ruby-PJL: Printer Job Language: printcap filters
Ruby-MSCSV: Read the shitty pseudo-CSV written by Excel