Best Tools for GTA 6 Modding

Every GTA 6 modder requires five tools if they want to ship anything more than drag-and-drop installs: a file browser, a script loader, a trainer, a memory extender and a texture viewer. All five are free and can be found in the Tools category.

OpenIV - the Swiss army knife

OpenIV allows you to navigate RPF archives, edit textures, convert models and package new mods into archives. Install this if you can only pick one - nearly every tutorial on the How to Install Mods landing page has you use it.

Rage Script Hook - runs custom code

Rage Script Hook loads custom C#/Lua scripts into the game while it's running. Almost every mod in the Scripts category requires it. Install it once and only update it when Rockstar Games patches the game (major patches tend to break it temporarily).

HeapAdjuster 600 - for heavy mod stacks

HeapAdjuster 600 increases your memory allocation which allows you to use large mod packs without crashing at startup. Make sure to install it before installing lots of texture packs / vehicle packs. Roughly 90% of "random crash on startup" problems are solved by installing it.

A trainer - for fast iteration

A trainer like MenyoV or Simple Trainer can make testing a lot faster: teleport anywhere instantly, spawn vehicles, change the weather and debug mod behavior as you play. Either one works great, and both are available in the Tools category.

Once you've got the basics

Visit the full Tools category for specialized tools such as texture viewers, model converters, RPF packagers and memory tweakers. Ready to make your first car? Go to Creating Your First Vehicle Mod. Selling a mod? Read Selling Mods - Creator Payout Guide.