Grumpy Gnome Software - Source code of games programmed for DOS using Allegro and DJGPP.
Map Editor - Mappy for PC (DOS and Win95)- A utility for creating flexible 'maps' for tile based 2D games (scrolling shoot-em-ups, or 8way scrolling adventures, whatever).
Programmer's Lair - An easy to use, large game programming site with information raniging from artificial intelligence and DirectX programming to sound and communications programming.