Heavy Gear II

Gamasutra
Designer Clancy Imislund informs about the making of the game.
http://www.gamasutra.com/features/19991208/imislund_01.htm

Gatling
Provides help for playing online.
http://gatling.4mg.com/

Heavy Gear 2 Debugging Page
Offers workarounds for several issues.
http://www.dp9.com/Funhouse/HG2fix.htm

Loki
Linux port for the game.
http://www.lokigames.com/products/heavy-gear2/