This is still actively being developed. It's called KMQuakeII

http://kmq2.quakedev.com/

I tried it out with a railz server, and it rocked pretty good.

Also, available there is a 3.23 (unofficial) patch. Helps with newer Computers.

They also have a version of qeradiant for 64 bit OS's.

Am I just posting old news? I hope not lol. The site was updated last on July 11th 2010.

I should also mention that they have incorporated Lazarus in to it.