QuickREx is a regular-expression plugin for Eclipse. It features on-the-fly evalution, code-completion, group-navigation, different engines and a library for regular expressions. QuickREx also runs as a standalone application - check the downloads.33 weekly downloads
A project in which artifacts of practical code are accumulated & shared within developers, for purpose of quick learning/reuse or quick memory-recovery. It defined common interface for developers to integrate their different-purposed code together easily.