Modern Half-Life 1 SDK for Xash3D FWGS engine, has enhanced graphics and physics and a lot of new features for mod-makers. Crossplatform, supports Windows/Linux. Based on XashXT and Spirit Of Half-Life.

Simple utility for mapping/scripting/speedrunning or researching games based on GoldSrc/Xash3D FWGS engine (such as CS 1.6, Half-Life, and other mods)

Metamod plugin that gives the ability to check client files by their name and md5 hash.

Old piece of code that I wrote 2003/2004. This is an expansion of the mdl viewer code from the half-life SDK.

HTTP server as metamod module for FastDL

Master Sword: Rebirth Server Engine (based on ReHLDS)

HLBridge is a bot that forwards player messages from Telegram to the Half-life server on the Xash3D FWGS Engine and vice versa.

A cross-platform compatible version of studiomdl for Half-Life.

A GolSrc mod which will time your speedrun while bunny hopping and wall-jumping enabled.