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    27 repositories

    • Obsoletium

      Public
      Modified Source Engine (2018) from Valve 🎮🧩🕹️👾
      portalsource-enginehalf-life-2
      portalsource-enginehalf-life-2
      C++
      •
      Other
      •21•65•9•13•Updated Apr 18, 2026Apr 18, 2026

    • source-physics

      Public
      Source 1 physics engine (restored from assembly)⚙️🔄💧
      physics-enginecollision-detectionphysics-3d
      physics-enginecollision-detectionphysics-3dvphysicsragdoll-physics
      Rich Text Format
      •33•11•0•0•Updated Feb 16, 2026Feb 16, 2026

    • libpng

      Public
      LIBPNG: Portable Network Graphics support, official libpng repository
      C
      •
      Other
      •773•0•0•0•Updated Feb 8, 2026Feb 8, 2026

    • vpc

      Public
      Valve Project Creator is a tool to generate build systems for Visual Studio, Xbox 360, PlayStation 3, Xcode and Make
      makevalve-project-creatorsolution-generator
      makevalve-project-creatorsolution-generator
      C++
      •
      Other
      •4•11•0•0•Updated Jan 2, 2026Jan 2, 2026

    • speex

      Public
      Speex voice codec mirror - THIS IS A MIRROR, DEVELOPMENT HAPPENS AT https://gitlab.xiph.org/xiph/speex
      C
      •
      Other
      •168•0•0•0•Updated Dec 30, 2025Dec 30, 2025

    • protobuf

      Public
      Protocol Buffers - Google's data interchange format
      C++
      •
      Other
      •16k•0•0•1•Updated Dec 30, 2025Dec 30, 2025

    • celt

      Public
      Mirror of git://git.xiph.org/celt.git
      C
      •
      Other
      •2•0•0•0•Updated Dec 30, 2025Dec 30, 2025

    • snappy

      Public
      A fast compressor/decompressor
      C++
      •
      Other
      •1k•0•0•0•Updated Dec 6, 2025Dec 6, 2025

    • SDL

      Public
      Simple Directmedia Layer
      C
      •
      zlib License
      •2.7k•0•0•0•Updated Dec 6, 2025Dec 6, 2025

    • libjpeg-turbo

      Public
      Main libjpeg-turbo repository
      C
      •
      Other
      •1.1k•0•0•0•Updated Dec 6, 2025Dec 6, 2025

    • setup-masm

      Public
      A GitHub Action to facilitate configuring MASM (Microsoft Macro Assembler) in the workflow PATH to use x86 or x64 assembly in Win32 applications.
      TypeScript
      •
      MIT License
      •2•0•0•0•Updated Nov 2, 2025Nov 2, 2025

    • DirectXMath

      Public
      DirectXMath is an all inline SIMD C++ linear algebra library for use in games and graphics apps
      C++
      •
      MIT License
      •251•0•0•0•Updated Nov 2, 2025Nov 2, 2025

    • stb

      Public
      stb single-file public domain libraries for C/C++
      C
      •
      Other
      •8k•0•0•0•Updated Nov 2, 2025Nov 2, 2025

    • .github

      Public
      Small collective of Source 1 modders
      0•0•0•0•Updated Oct 1, 2025Oct 1, 2025

    • bzip2

      Public
      bzip2 is a freely available, patent free (see below), high-quality data compressor. It typically compresses files to within 10% to 15% of the best available tec…
      C
      •
      Other
      •1•0•0•0•Updated Sep 24, 2025Sep 24, 2025

    • 7zip

      Public
      7-Zip
      C++
      •287•0•0•0•Updated Sep 24, 2025Sep 24, 2025

    • Lua

      Public
      CMake based build of Lua (5.4.6 and 5.3.3)
      C
      •65•0•0•0•Updated Sep 9, 2025Sep 9, 2025

    • ShaderCompile

      Public
      Standalone shadercompile, that doesn't depend on valve libraries and supports x64
      C
      •16•0•0•0•Updated Aug 28, 2025Aug 28, 2025

    • minimp3

      Public
      Minimalistic MP3 decoder single header library
      C
      •
      Creative Commons Zero v1.0 Universal
      •249•0•0•0•Updated Mar 27, 2025Mar 27, 2025

    • zip-utils

      Public
      Zip Utils - clean, elegant, simple zipper
      zipunzipunzipping-files
      zipunzipunzipping-filesunzipperunzip-filesunzipping
      C++
      •0•2•0•0•Updated Jan 23, 2025Jan 23, 2025

    • NvTriStrip

      Public
      NVidia triangle stripper library
      C++
      •
      Other
      •0•0•0•0•Updated Jan 23, 2025Jan 23, 2025

    • mpaheaderInfo

      Public
      Slightly modified MP3 headers reader from https://www.codeproject.com/Articles/8295/MPEG-Audio-Frame-Header
      mp3-filesmp3-tagsmp3-format
      mp3-filesmp3-tagsmp3-format
      C++
      •
      GNU General Public License v3.0
      •0•0•0•0•Updated Jan 19, 2025Jan 19, 2025

    • SpeedTree

      Public
      Obsolete Speed Tree SDK (https://docs9.speedtree.com/sdk/doku.php)
      speed-treespeedtree
      speed-treespeedtree
      C++
      •0•0•0•0•Updated Jan 10, 2025Jan 10, 2025

    • zlib

      Public
      A massively spiffy yet delicately unobtrusive compression library.
      C
      •
      Other
      •2.7k•0•0•0•Updated Nov 30, 2024Nov 30, 2024

    • cryptopp

      Public
      free C++ class library of cryptographic schemes
      C++
      •
      Other
      •1.7k•0•0•0•Updated Nov 30, 2024Nov 30, 2024

    • squirrel

      Public
      Official repository for the programming language Squirrel
      C++
      •
      MIT License
      •184•0•0•0•Updated Nov 8, 2024Nov 8, 2024

    • openvr

      Public
      OpenVR SDK
      C++
      •
      BSD 3-Clause "New" or "Revised" License
      •1.3k•0•0•0•Updated Aug 1, 2024Aug 1, 2024
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