Half-Life MDL Decompiler
Console program for decompiler *.MDL models files into *.SMD files sources
Half-Life Sprite Viewer
Sprites viewer software
Half-Life Sprite wizard
Creating sprites from pictures
Half-Life Model Viewer
Creating and editing Half-Life models
Valve Hammer Editor
Map editor for games basef on the half-life engine from valve
Wally
Creating and editing Half-Life textures
Geek Play
Demo files viewer (*.dem)