ROOT uses Electric Commander [5] for continuous integration, running roottest regularly, and for building the releases. You can see the recent results by logging in [6] with user user and password pass.
If you are a ROOT developer please see this page [7].
Links:
[1] http://root.cern.ch/drupal/category/package-context/build
[2] http://root.cern.ch/drupal/category/package-context/releases
[3] http://root.cern.ch/drupal/category/package-context/roottest
[4] http://root.cern.ch/drupal/category/package-context/test
[5] http://electriccloud.com/products/electriccommander.php
[6] https://ecsft.cern.ch
[7] http://root.cern.ch/drupal/electric-commander-developers