Yes, NetQuake. Regular Quake, not QW. The thing you got out of the box in 1996, played online. I used to be a NetQuake player until 2004. It was fun, but frustrating after a while (no movement prediction sucks ass). I knew there was such a thing as QuakeWorld, but the reason I never tried it until 2003 is simple: I thought it sucked. There was even a command called 'qwsucks' in crmod (the then KTeams Pro equivalent). So how come I play QW for 4 years now? I got bored of the usual shitacting, aimbotting and lack of competitons. No progress in short. When I first tried ZQuake it felt really good, in fact I enjoyed it more than NQ, even for the first time. I didn't admit it though. So I continued playing NQ and a some QW, and little by little the latter took over. I stopped NQ completely. Big games, tourneys, many hungarian servers, skill, a great community and bunnyhopping were the things I loved the most. It was great. I also tried to convince others to join. My efforts remained futile.

4 years later...

I just had a brief visit to NetQuake. It hasn't got something you'd call a community. Only a couple of people playing FFA. It is hard to say what the worst thing is. I think it is a close-run contest between, people having misbeliefs about QW, the same shitacting players still around and two good players wasting their time with NQ. I took my time asking people about QW, here are the results:

I don't like qw
NEXT!

only spam
Huh?

physics, the aim, and the lagg
Physics? QW has great physics, and the movement is just awesome. Aim? I felt a great increase in my LG skills after NQ. Lag? For the first time in years I was not lagging. It was a great feeling, as though breathing properly for the first time.

you lack alot of sounds... like.. you cant hear someone take mega from gl... you can in nq
That statement is just ridiculous.

that weird lagg, you aint where you are
You know where you are in QW, I assure you.

i rather have 150 nq lagg then qw
Are you sure? 150 in NQ is nasty.

and its hard to stop... if you stop walking, you continue a bit
Wrong. That's NQ over ping 30.

My point is that you should all start playing QW. That is the thing meant for Quake 1 online. It's a fact. I still play regular quake for single player, but that's it. QuakeWorld has more players, much more skill and a great community. Apart from map knowledge, some fun and new friends, I consider my NQ years a waste of time. It lacks skill and progress. QW has it!

A hungarian QW player once told me this:
Bent, just come over to QW. I also played NetQuake, and look at me now!