The zipdiff tool compares the contents of two zip files. It is
equally suited for comparing jar, EAR, WAR, or RAR files.
The project includes a task for Ant.
The Apache Compress Ant Library provides Ant tasks and types for reading and writing various archives and compressed files. Using Apache Commons Compress, it supports the AR, BZIP2, CPIO, GZIP, TAR, and ZIP formats.
A object-relational mapper.
Software to track and log calls.