Xenofarm is a distributed build script similar to
Mozilla's Tinderbox, but with more emphasis on
finding the causes of bugs rather than merely
finding that they exist. The main differences are
that Xenofarm synchronizes its build on all
platforms (so all the hosts build the same source
package at the same time), Xenofarm waits for five
minutes (by default) since the last CVS checkin
before getting its checkout (to minimize the
chance of getting broken code in the middle of a
checkin), and more information is sent from the
build machines to the front end (so you can track
bugs even without login access to the build
machines).