(All of the following can be integrated with Ant.)
CruiseControl
CruiseControl Documentation (compound)
CruiseControl Scheduling Scenarios
clearAntLib ClearCase integration for Ant
AntUtility Profiles an Ant build to find slow downs
Transformica code generator
Java Preprocessor uses comments to provide C preprocessor-like features
Jacson Jacson is a Java based, highly configurable, versatile tool to filter text, similar to a Java version of sed, awk, grep, cut, uniq, perl, etc.
FMPP FMPP is a general-purpose text file preprocessor tool that uses FreeMarker templates.