I've been using various newsreaders for years to follow Usenet groups, but I would now appreciate to not be tied to a particular computer or platform. Note that I'm not ready to pay a monthly subscription to read the few text-only groups I'm interested in.
Is there any solution, beside Google Groups, to read Usenet groups (and post to them) from any computer (to either use online or install on my own server)? I am looking for something that is closer to a newsreader, with scores, mark-thread-as-read, ignore-thread, etc.