Good Newsgroup Client for OS X

Solution 1:

Unison is very nice and freely available (but not actively developed). OSXnews may not be as polished as Unison, but it works and it is open source.

Solution 2:

Unison by Panic is quite good. It's fully featured and looks nice but the UI is a bit wonky at times.

https://panic.com/unison/

Solution 3:

"Cheap" is a relative and subjective term, but if you want good, then I highly recommend Unison by Panic Software.

Solution 4:

SeaMonkey is pretty good and it is for free. It is a Firefox-based all-in-one internet suite application featuring a web-browser as well as e-mail, newsgroup, IRC and RSS clients, but it can be set up to only display the newsgroup reader on startup in the preferences under "Appearance".