BlockSync is a command line tool written in Java, designed to synchronize single large files (such as virtual disk images) across networks with limited bandwidth. It makes use of MD5 hashing to only transfer the data that needs to be transferred. Ideal for use in command line scripts.
UseModj is a Java based Wiki Clone, using Struts, Velocity Layout, CSS. It's goal is to be the same function and file storage as UseMod wiki, but is deployed by dropping a single war file into Tomcat or JBoss Server and supports file/image attach.
Java library that enables efficient caching of resources (downloaded, generated by FOP etc.).Resource can be cached on disk and in memory, with load algoritm that shifts resources between memory and disk. SQL DB can be used to enable hibernate procedures
The JCS is a caching system for distributed java applications. It uses a combination of memory, disk, lateral, and remote components to provide data integrity and session failover across webservers.