With NewsGrabber you can search newsgroups for subjects (regular expressions are allowed), monitor articles in newsgroups, or just fetch an article by message id. It is configured by an XML file, and you can specify as many regular expressions per newsgroup as you like. You can also add a number of news servers.
JFreshmeat-NNTP is the first released mini-app to use an NNTP class being developed for a Java-only NNTP-based newsreader. It connects to freshmeat's NNTP server, and retrieves the headers, displaying them in the top pane of a two-pane window. Double-clicking on a particular announcement will retrieve the text of that announcement and display it in the bottom pane. The initial class is very short, calling a general purpose newsgroup monitor class. It can be adapted to monitor any server/group very easily. Future plans for the JFreshmeat-NNTP code include SOCKS support, saving article data, persistant storage of articles, UI improvements, timed polling for monitoring updates. It may also be rolled into the general purpose newsreader as a side-feature eventually.
Shohei is a multi-language, multi-function, multi-server, multi-user, multi-context, multi-media Web-based mail client, news client, calendar, and note server. Users can be in any number of domains on any number of servers. Web-based administration with different admins for different domains. Features include an online calendar, notes, users' personal Web pages, a news client, and is MIME aware.