The named-regexp library is a thin wrapper for java.util.regex, implementing named capture groups for Java 5/6. (This isn't needed in Java 7, which already supports this feature.)
LURT is a GUI regex tester. It features work
saving, regex syntax highlighting, group
displaying, and more. It will help you to create
effective regexes quickly and easily.
A C++ wrapper around the OpenGL C API.
An interface library to access tags for identifying languages.