: For those looking for versions with pre-integrated multiplayer or specific content, sites like FreeTP.org offer builds that support online/LAN play and often come with essential "Content Packs" (like textures from Counter-Strike: Source) pre-installed.

Guide :: Как играть с друзьями в Garry's Mod? - Steam Community

Searching for the "best" way to download Garry’s Mod (GMod) with addons often leads to a choice between the official Steam version and various community-repacked versions. Ways to Download and Play Garry's Mod