Buildr in the Wild
An non-exhaustive listing of open-source projects using Buildr (in alphabetical order):
Apache Ode Buildfile
Buildr4eclipse git clone git://github.com/eclipse/buildr4eclipse.git
Intalio Tempo Buildfile
Noop - A testable programming language running on the JVM Buildfile
SPDE / Runaway processing git clone git://technically.us/git/spde to see the Buildfile
Patient Study Calendar Buildfile tasks/*.rake
servlet-original-transport-support Buildfile