Sims 3:Modding

CAS (Create a Sim)

Things you can stick on your sims

Delphy's CTU

Currently in beta - allows creation of new stencils, full clothing retextures, and more.

• Delphy's CAS Texture Unitool

Tutorials

Tutorials on using Delphy's CTU

• Creating Clothing Stencils by daluved1

• Quick and Dirty Guide to the CAS Unitool by Hanlon Razor

Patterns

Burberry, burberry, burberry.

Delphy's Pattern Creator

The Pattern Packager program allows you to add new Patterns (aka items that appear in Create a Style) to your Sims 3 game.

• Delphy's Pattern Packager

TSR Workshop

The TSR workshop tool has a pattern plugin that can be used as an alternative, offering a somewhat easier GUI and auto-upload to TSR, if you are a member there.

• TSR Workshop

Tutorials

• Link
• Link

etc