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, ...