Links:
Hammer of Thyrion project page:
http://sourceforge.net/projects/uhexen2/
Anvil of Thyrion (the previous Linux port):
http://aot.linuxgames.com
Hexen II FAQ:
http://www.raven-games.com/hex2faq/
Anvyl of Thyrion downloads:
http://www.3ddownloads.com/linuxgames/aot
Pa3PyX' Hexen II source port:
http://sky.prohosting.com/pa3pyx/
JSHexen II source port:
http://jurajstyk.host.sk/
Linux GLQuake:
http://mfcn.ilo.de/glxquake
QuakeForge:
http://www.quakeforge.net