Appnr

graphical newsreader written in Python and GTK+ toolkit

With XPN you can read/write articles on the Usenet with a good MIME support.
XPN can operate with all the most widespread charsets, starting from US-ASCII
to UTF-8. When you edit an article XPN automatically chooses the best
charset, however is always possible to override this choice.

There also other useful features like scoring, filtered views, random
tag-lines, external editor support, one-key navigation, ROT13, spoiler
char, ...