Portable Half-Life SDK. GoldSource and Xash3D. Crossplatform.

Half-Life SDK updated to compile under VS2019 and 2022. Check README.md for more information.

Half-Life Updated SDK with Opposing Force and Blue Shift merged in, along with other improvements. Check README.md for more information.

Half-Life SDK updated to compile under VS2019, plus TWHL programming tutorials

Half-Life: Opposing Force SDK based on Half-Life Updated, with bug fixes. Check README.md for more information.

Half-Life SDK for making mods upon it

Enhanced server-side GameDLL for Counter-Strike 1.6 (and CS: Condition Zero), offering new features and fixes.

Port of Half-Life SDK 2.1 to Windows CE