Addons Menu - Garry's Mod Wiki

The Addons Menu is located in the Main Menu, and it is used for manipulating addons, allowing the user to enable, disable, subscribe and unsubscribe from addons. View the addons you are subscribed to, quickly enable or disable all subscriptions. In..

How to Create a Car in Garry's Mod: 13 Steps (with Pictures)

Using Tools - Garry's Mod Wiki

spawnmenu.AddToolMenuOption - Garry's Mod Wiki

Spawning Props - Garry's Mod Wiki

ULX + ULib, Garry's Mod Wiki

Spawning Props - Garry's Mod Wiki

Q Menu image - Jared's Mod for Garry's Mod - Mod DB

Gmod Weapon Menu Creator is a script that replaces the basic Gmod weapon Selector menu. Which was already the one in Half Life 2

Gmod Weapon Menu Creator - The weapon selector mod - Addon

Gmod Advanced Inventory System - Addon