Alternatives and similar repositories for basis:

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

• Magic-Nipples / Xash3D-VS2019
  OBSOLETE | Go to the link below for the current version!
  ☆28Updated 4 years ago
• Admer456 / halflife-adm-legacy
  Advanced Development Mod - technical overhaul for Half-Life
  ☆17Updated 2 years ago
• Triang3l / BS2PC
  Half-Life PlayStation 2 map converter
  ☆39Updated 2 years ago
• wfowler1 / bsp-decompiler
  Decompiler for many BSP formats
  ☆55Updated 9 months ago
• twhl-community / halflife-bs-updated
  Half-Life: Blue Shift SDK based on Half-Life Updated, with bug fixes. Check README.md for more information.
  ☆29Updated 5 months ago
• BerntA / MasterSwordClassic
  Master Sword: Continued (Classic)
  ☆10Updated last year
• LogicAndTrick / halflife-updated
  Half-Life SDK updated to compile under VS2019, plus TWHL programming tutorials
  ☆16Updated 2 months ago
• suXinjke / HalfPayne
  ☆40Updated last week
• pwitvoet / wadmaker
  Command-line tools for making/extracting Half-Life textures and sprites
  ☆42Updated 2 weeks ago
• FreeSlave / halflife-featureful
  Half-Life SDK for making mods upon it
  ☆37Updated this week
• eukara / freegunman
  Clean-room reimplementation of Gunman Chronicles in QuakeC.
  ☆22Updated 11 months ago
• seedee / SDHLT
  Map compile tools for the Half-Life engine
  ☆65Updated 7 months ago
• FreeSlave / vhlt
  Vluzacn's custom build of Zoner's Half Life Tools (ZHLT)
  ☆16Updated 3 years ago
• SamVanheer / BSPViewer
  Unfinished prototype Half-Life Map viewer that uses OpenGL shaders instead of immediate mode. To be replaced with Half-Life Asset Manager…
  ☆36Updated 8 years ago
• twhl-community / VHLT-V34
  VHLT V34 source code. Check the branches for versions with ifdefs removed for easier reading
  ☆13Updated last year
• twhl-community / HalfLife.UnifiedSdk-CSharp
  Tools for the Half-Life Unified SDK written in C#.
  ☆12Updated last year
• twhl-community / halflife-op4-updated
  Half-Life: Opposing Force SDK based on Half-Life Updated, with bug fixes. Check README.md for more information.
  ☆76Updated 5 months ago
• Magic-Nipples / Xash3D-VS2019-Clean
  A continuation of the last version of Xash3D [Build 4529]. Updated to VS2019 as well.
  ☆27Updated 3 months ago
• stanriders / hl2-asw-port
  Porting Half-Life 2 base to the Alien Swarm Engine
  ☆24Updated 9 years ago
• tschumann / sandbot
  GoldSource engine multiplayer bot
  ☆37Updated 2 weeks ago
• malortie / halflife
  Half-Life 1 engine based games
  ☆34Updated 3 years ago
• fortressforever / fortressforever-2013
  FF on Source SDK 2013
  ☆13Updated 7 months ago
• pwitvoet / mess
  MESS (Macro Entity Scripting System): a Half-Life level compile tool.
  ☆27Updated 3 months ago
• IntriguingTiles / HLFixes
  Fixing bugs in GoldSrc
  ☆26Updated 3 months ago
• UAVXP / LeakNet-SDK
  https://gitlab.com/leaknet/LeakNet
  ☆22Updated 2 years ago
• LostGamerHL / BHL
  It's source code Of brutal Half-Life(Modification on Half-Life 1).
  ☆17Updated 7 years ago
• malortie / source-sdk-2013
  The 2013 edition of the Source SDK
  ☆14Updated last month
• Pinsplash / SEFGD
  SE FGD's
  ☆24Updated last year
• chovelyoukai / trenchbroom-source-tools
  Files and tools for using Trenchbroom to make Source engine maps
  Updated 3 years ago
• fnky / studiomdl
  A cross-platform compatible version of studiomdl for Half-Life.
  ☆22Updated last year