AdminNow
An add-on program that allows server operators to better control game parameters. With instructions on operations, news, and forum.

AMX Mod X
Provides user-created administration tools through a secondary scripting language. Includes downloads, forums and a plugin generator.

Borderline Studios
Developers of the Half-Life modifications Russian Front, Suicide March and the Secrets of War.

Bullseye Crosshairs
Replacement crosshairs for Half-Life with instructions on installation.

Half-Life Quick Connector
HLQC is a compact tool to aid connecting to Half-Life servers.

NextWish's Gaming Modifications
Modifications and game fixes for Half-Life and Counter Strike.

Sven Co-op
An online cooperative Half-Life modification where players fight against AI controlled enemies.

The Black Mesa Facility
Reviews, FAQ, game information, downloads, and links.

The Half-Life Experience
Customizations, tutorials and tweaks for optimising your Half-Life.

The Ship
Includes news, downloads, a manual, movies and screenshots.