PrimeXT
Modern Half-Life 1 SDK for Xash3D FWGS engine, with cross-platform support, improved graphics/physics, and a lot of new features for mod-makers, while retaining all the approaches to work inherent from GoldSrc and Xash3D. Also all the functionality from XashXT and Spirit Of Half-Life was inherited too. Suitable for creating both singleplayer and multiplayer mods. Development was started in August 2021.
GitHub page
ModDB page
Documentation page
GoldSrc Monitor
Simple and standalone utility with bunch of functions for mapping/scripting/speedrunning or researching games based on GoldSrc/Xash3D FWGS engine (such as CS 1.6, HL, HL:OF, HL:BS, and other HL-mods).
GitHub page
Gamebanana page
Dev-CS page
XashMS
Asynchronous, cross-platform master server implementation for Xash3D FWGS engine. Based on libevent, written in C++17, supports IPv6 protocol (as optional feature).
FutabaVfdM202MD10C
Library for Arduino framework for convenient working with vacuum fluorescent displays (VFD) based on Futaba M202MD10C board. Implements as much as possible functions that display supports, such as dimming, user-defined symbols, code pages, cursor visibility toggle, self-testing etc.
SMD Splitter
Utility for automatic preprocessing SMD-files in order to bypass GoldSrc internal limit. Program saves a lot of time for the 3D-artists. This program was made to commercial order.
mdl-flip
Fast, standalone and self-contained (doesn't require Visual Basic/VC++) tool for flipping/mirroring GoldSrc/Xash3D models. Created as modern replacement for gFlip utility. This program was made to commercial order.
mem2pix
Crossplatform utility for real-time visualization process memory content as image. Based on SDL2, works on Windows and Linux. Supports many pixel formats, works even on Windows XP.