For my first Ruby project, I reimplemented ADEM from scratch. ADEM is tool for automatically installing applications on the Open Science Grid via pacman. Here is a glimpse of the interface.

ADEM is a tool for deploying and managing software on the Open Science Grid.

  Usage:
    adem command [options]

  Examples:
    adem config --display
    adem sites --update
    adem app --avail

  Further help:
    adem config -h/--help        Configure ADEM
    adem sites -h/--help         Manipulate the site list
    adem app -h/--help           Application installation
    adem help                    This help message

The original subversion repository is found in https://svn.ci.uchicago.edu/svn/vdl2/SwiftApps/adem-osg. A Github repository is also mirrored in git://github.com/aespinosa/adem.git

Happy grid computing!