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Use it again! Thunderbird has a built-in Usenet client and you can configure it to connect to any number of NNTP servers.

Pan works well for me when I'm on a desktop with a GUI. Otherwise, I still use tin.

WinVN was always my favourite in terms of UI, but you really needed a local cache server as it had zero offline support.

Depends. I like text only, so slrn