Top rated in RSS Tools
Gravity is a news client for reading news over NNTP on Windows Operating Systems.
4tude Dialog is an excellent choice when looking for a news reading program.
Active Web Reader
It is a web feed reader that can support RSS 0.9 x, 1.x and 2.x feed formats.
yEnc/NZB newsreader with scheduler and cache. Custom settings for each newsgroup.
Android Newsgroup Downloader
It is a new newsgroup downloader that is designed for huge binary newsgroups.