This is an excellent resource for colonial wargamers. Warflag has a number of nice color plates of French, German and Italian colonial uniforms from 1889.
colonials
Weapons of the Philippines
This site was useful to me when I was working on my Moro / Philippine Rebellion wargame. The 25mm Old Glory Moro miniatures are neat, but I sometimes had a hard time telling what all the bits were. This site helped me make some sense of the weapons the figures were carrying.
Rorke’s Drift rules
Rorke’s Drift has captured the imagination as one of the greatest stands in history. Thousands of brave Zulu warriors versus a handful of stalwart British soldiers. What’s not to like? The battle is a staple for colonial wargamers. Steve Winter has these free wargames rules for Rorke’s Drift.
The Great 1857 Rebellion/Mutiny
The Great 1857 Rebellion/Mutiny is a set of free wargames rules for the Indian Mutiny.