...
Here's a list of the stuff we have running on the SpamAssassin zone, spamassassin.zones.apache.org.
BuildbotPreflightBuildBot: continuous integration daemon, running at http://buildbot.spamassassin.org:8010/8011 . It uses Python and the Twisted framework, which is installed in /local. It runs "make test" (and variants) on each checkin.PreflightBuildBot: another continuous integration daemon, using the same infrastructure, but aimed at testing our rulesetstests our rulesets against a small corpus of mail on every SVN checkin.
RuleQaApp: web application aimed at QA'ing and developing rules.
...