Your pgn viewer looks great, and I will certainly try it out when it is finished.

The nice thing about SCID is that it has a zillion and one features, can be used as a chess database (SCID stands for Shaun's Chess Internet Database, or something like that), can be used to play on FICS, is in active development (has a mailing list with comments every day) etc. The people writing it are Debian folk, I think. (Shaun disappeared a few years ago, but was tracked down and gave permission for the newer people to takeover the project, which they have been doing for a couple of years now.) And it is set up to work with chess computing engines too. Maybe you all would rather work from scratch instead of using more than a decade of development experience, though.

But something like a simple PGN viewer would make me personally pretty happy! Some of my favorite chess software is incredibly simple and has very few features.

Xboard, mentioned above, is one of the oldest fast chess interfaces out there. I think that it can't display more than one game at a time, though, which is one of the things I was hoping for beyond a pgn reader.

I have no experience with the python chess games mentioned in the thread; apparently they are not widely popular in the FICS/ICC world.

I suppose everyone in this thread knows about stuff like Timeseal and the necessity to correct for net lag? Just thought I'd mention it to make sure.