QStat is a command-line program that displays information about
Internet game servers. The servers are either down, non-responsive, or
running a game. For servers running a game, the server name, map name,
current number of players, and response time are displayed. Server
rules and player information may also be displayed.

It supports the following games:
 o old Quake (NetQuake)
 o QuakeWorld
 o Hexen II
 o HexenWorld
 o Quake II
 o Unreal
 o Turok2
 o Sin
 o Half-Life  
 o and more...

Author: Steve Jankowski <steve@qstat.org>
WWW: http://www.qstat.org/