What is Garrys mod DLL?

DLL files categorized under Garry's Mod typically pertain to additional functionalities or modifications for the popular multiplayer sandbox game developed by Facepunch Studios. These DLLs can extend the game’s capabilities, introduce new features, enhance existing ones, or provide alternative versions of game assets and mechanics. They are essential components that enable modders and enthusiasts to customize the game according to their preferences, thereby enriching the gaming experience beyond its default settings.