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.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.