RAA - niouz

niouz is an extremely simple NNTP server implemented in pure Ruby. It does not offer all the features of standard NNTP servers like CNews or INN (most notably, it can't communicate with other servers, but only with clients), but it is orders of magnitudes simpler to deploy: one Ruby file, no dependencies outside Ruby 1.8, very simple setup.

niouz provides a simple and easy way to quickly set up private newsgroups for a small group of people. It generally does the Simplest Thing That Can Possibly Work, and would probably not scale beyond a few dozen users and a few thousands messages. On the other hand, the resulting code is quite small (about 600 lines including comments), easy to understand and to modify/extend.