tinkercad.com

Tinkercad is a free, web-based 3D design and modeling tool. It offers a variety of tools for creating 3D models, including basic shapes, 3D text, and custom shapes. It also provides tools for adding color and texture, and for customizing models for 3D printing. Additionally, users can access a library of 3D models and components, as well as access to a community of other users.