Allow integrated or USB-connected webcams to be accessed from Java
Develop parallel programs. Try various thread configs. GUI front-end.
An example of a simple chat system
Provides 100% pure Java mutual exclusion.
Fast and more random implementations of java.util.Random.
Cachelet - the simplest java framework for general purpose caching
Extend GDB Server feature, OS Aware Debugging, Thread Stack Checking
Lightweight LRU Caching library with persistence
Better Modularity, Better Concurrency
A MINA-like, cross-platform C++ network library based on boost::asio
Visualization of Java thread dumps
Android common lib, ImageCache, HttpCache, DropDownListView, etc.
Crash report for Android apps
RapidJDBC - Java library for easier JDBC and SQL development
Big Sack: A lightweight Java Key/Value store with undo and disk cache.