Alumni on Rails has been featured recently in an article about Ruby on Rails

Michael Bächle, Paul Kirchberg, “Ruby on Rails”, IEEE Software, vol. 24, no. 6, pp. 105-108, Nov/Dec, 2007

Get it here:
http://doi.ieeecomputersociety.org/10.1109/MS.2007.176

alumni on rails is available for download and evaluation.

prerequisite: a ruby on rails development infrastructure.

-> Visit Rubyforge Download Page