ngetdaemon allows quick and efficient perusing and downloading from Usenet remotely. Updating and sorting of all headers is done with one click. The strongest feature is that posts are grouped together in 'file groups', meaning a post consisting of 100 files is compacted into one line and determined to be complete, incomplete, par fills, etc. There are no pretty buttons, animations, etc. Everything is designed to create as little strain on bandwidth as possible.
X Python Newsreader (XPN) is a multi-platform newsreader with Unicode support. It has features like scoring/actions, X-Face and Face decoding, muting of quoted text, newsrc import/export, find article and search in the body, spoiler char/rot13, random taglines, and configurable attribution lines.
GNUSTEP Live CD contains a lot of software for GNUstep, a free implementation of the OPENSTEP framework (which is also directly used in Mac OS X as Cocoa). It includes excellent applications for RAD (GORM and ProjectCenter). The CD is available for i486, AMD64, Apple Mac PowerPC, and Sun UltraSPARC computers.
SharpNNTP is a C# library for accessing newsgroups from within the .NET/Mono Framework. It can handle group listing, message retrieving, and message posting as Datasets (useful for DataBinding) or XML (useful for many other uses). It implements full documentation and full IntelliSense help. Binaries are provided for both the MS (sharpNNTP.dll) and Mono (sharpNNTPmono.dll) frameworks.
NewsOutlook is a tool that aims to improve the signal to noise ratio of Usenet newsgroups and syndication feeds (RSS and Atom) by selecting only useful news. It consists of two modules: a Web-based configuration front-end and a server daemon. It uses the HTML::Mason framework and stores data in a MySQL database.
NNTPspider searches for freely accessible NNTP servers (free news servers) by using information from the message headers. This search starts with at least one default newsserver that you can access, usually the one at your ISP. It reads the Path: lines in the headers in order to find more news servers. All the servers that are found are checked for public access and queried for a list of supplied newsgroups. This results in a quite complete list of all news servers currently availiable.
MessageViewer is a very simple GTK program that fetches and views one Usenet news message based on its message-id. Its main use is to quicky look at one article in cases where opening a real news reader and trying to locate it based on msg-id is too much of a hassle. It can also read the message-id in news:<id> or news:id URL formats, and can therefore be set to handle such protocol requests. It does not support authentication of any kind at the moment.