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
• twhl-community / VHLT-V34
  VHLT V34 source code. Check the branches for versions with ifdefs removed for easier reading
  ☆12Updated last year
• Admer456 / halflife-adm-legacy
  Advanced Development Mod - technical overhaul for Half-Life
  ☆17Updated 2 years ago
• eukara / freegunman
  Clean-room reimplementation of Gunman Chronicles in QuakeC.
  ☆22Updated 10 months ago
• Triang3l / BS2PC
  Half-Life PlayStation 2 map converter
  ☆39Updated 2 years ago
• malortie / halflife
  Half-Life 1 engine based games
  ☆34Updated 3 years ago
• FreeSlave / halflife-featureful
  Half-Life SDK for making mods upon it
  ☆32Updated this week
• 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 4 months ago
• wfowler1 / bsp-decompiler
  Decompiler for many BSP formats
  ☆54Updated 8 months ago
• fortressforever / fortressforever-2013
  FF on Source SDK 2013
  ☆13Updated 6 months ago
• chovelyoukai / trenchbroom-source-tools
  Files and tools for using Trenchbroom to make Source engine maps
  ☆0Updated 3 years ago
• twhl-community / halflife-op4-updated
  Half-Life: Opposing Force SDK based on Half-Life Updated, with bug fixes. Check README.md for more information.
  ☆75Updated 4 months 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…
  ☆35Updated 8 years ago
• BerntA / tfo-code
  The Forgotten Ones Source Code
  ☆12Updated last year
• BerntA / MasterSwordClassic
  Master Sword: Continued (Classic)
  ☆10Updated last year
• supadupaplex / ps2-hl-tools
  Tools for Playstation 2 Half-Life port
  ☆36Updated 2 years ago
• suXinjke / HalfPayne
  ☆40Updated 2 years ago
• LogicAndTrick / halflife-updated
  Half-Life SDK updated to compile under VS2019, plus TWHL programming tutorials
  ☆16Updated last month
• misyltoad / VAudio-MiniMP3
  Replacement MP3 playback module for the Source Engine
  ☆38Updated 5 months ago
• fnky / studiomdl
  A cross-platform compatible version of studiomdl for Half-Life.
  ☆21Updated 11 months ago
• hoaxer / Half-Life-Decay
  Half-Life Decay PC project, coordinated by me back in 2008
  ☆33Updated 2 years ago
• SourceEnginePlayground / Hyperborea
  ☆24Updated 6 years ago
• seedee / SDHLT
  Map compile tools for the Half-Life engine
  ☆65Updated 6 months ago
• Demez / source-asw-sdk
  All games from 2007 branch and 2013 branch ported to ASW (and my hl2 revamped)
  ☆10Updated 6 years ago
• FIREFIGHT-RELOADED / FIREFIGHT-RELOADED-src-sdk-2013
  Bitl's SMOD-like HL2 mod, FIREFIGHT RELOADED, built with Valve's Source SDK 2013 Base.
  ☆23Updated this week
• bachingo / TF2Vintage
  Current repository for Souce mod Team Fortress 2 Vintage
  ☆31Updated 3 years ago