Alternatives and similar repositories for halflife

Users that are interested in halflife are comparing it to the libraries listed below

• id-Software / Quake
  Quake GPL Source Release
  ☆5,350Updated last year
• ValveSoftware / source-sdk-2013
  The 2013 edition of the Source SDK
  ☆9,201Updated 2 weeks ago
• id-Software / wolf3d
  The original open source release of Wolfenstein 3D
  ☆2,354Updated 13 years ago
• id-Software / Quake-2
  Quake 2 GPL Source Release
  ☆3,029Updated last year
• id-Software / DOOM-3-BFG
  Doom 3 BFG Edition
  ☆5,170Updated 11 months ago
• ValveSoftware / Source-1-Games
  Source 1 based games such as TF2 and Counter-Strike: Source
  ☆731Updated last year
• rwengine / openrw
  OpenRW "Open ReWrite" is an un-official open source recreation of the classic Grand Theft Auto III game executable
  ☆2,077Updated last month
• id-Software / Quake-III-Arena
  Quake III Arena GPL Source Release
  ☆7,541Updated last year
• id-Software / DOOM-3
  Doom 3 GPL source release
  ☆3,347Updated 9 years ago
• ioquake / ioq3
  The ioquake3 community effort to continue supporting/developing id's Quake III Arena
  ☆2,575Updated this week
• chocolate-doom / chocolate-doom
  Chocolate Doom is a Doom source port that is minimalist and historically accurate.
  ☆2,136Updated last week
• twhl-community / halflife-updated
  Half-Life SDK updated to compile under VS2019 and 2022. Check README.md for more information.
  ☆436Updated 3 months ago
• ZDoom / gzdoom
  GZDoom is a feature centric port for all Doom engine games, based on ZDoom, adding an OpenGL renderer and powerful scripting capabilities
  ☆2,856Updated this week
• RobertBeckebans / RBDOOM-3-BFG
  Doom 3 BFG Edition source port with updated DX12 / Vulkan renderer and modern game engine features
  ☆1,646Updated last week
• FWGS / xash3d
  DEPRECATED in favor of https://github.com/FWGS/xash3d-fwgs. Only bugfixes are accepted.
  ☆583Updated 4 years ago
• nillerusr / source-engine
  Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
  ☆1,862Updated last year
• FWGS / xash3d-fwgs
  Xash3D FWGS engine
  ☆2,026Updated this week
• Croteam-official / Serious-Engine
  An open source version of a game engine developed by Croteam for the classic Serious Sam games.
  ☆3,094Updated 4 years ago
• Facepunch / garrysmod
  Sandbox mod for the Source Engine
  ☆1,114Updated last week
• id-Software / DOOM
  DOOM Open Source Release
  ☆16,701Updated last year
• id-Software / quake2-rerelease-dll
  ☆2,190Updated last year
• Novum / vkQuake
  Vulkan Quake port based on QuakeSpasm
  ☆2,011Updated last month
• id-Software / wolf3d-browser
  WOLF3D Browser Version GPL source release
  ☆620Updated 12 years ago
• FrictionalGames / HPL1Engine
  A real time 3D engine.
  ☆740Updated 2 years ago
• id-Software / Enemy-Territory
  Wolfenstein: Enemy Territory GPL Source Release
  ☆590Updated 13 years ago
• FrictionalGames / AmnesiaAMachineForPigs
  ☆1,435Updated last year
• kondrak / vkQuake2
  id Software's Quake 2 v3.21 with mission packs and Vulkan support (Windows, Linux, macOS, FreeBSD, Raspberry Pi 4)
  ☆947Updated 7 months ago
• NicknineTheEagle / TF2-Base
  The old Team Fortress 2 source code ported to Source SDK 2013
  ☆272Updated 2 years ago
• id-Software / RTCW-SP
  Return to Castle Wolfenstein Single Player GPL Source Release
  ☆594Updated 4 years ago
• ValveResourceFormat / ValveResourceFormat
  Source 2 Viewer is a powerful tool that allows you to browse VPK archives, view, extract, and decompile Source 2 assets, including maps, …
  ☆1,847Updated this week