Autodesk 123D was a suite of hobbyist CAD and 3D modeling tools. Developed by Autodesk, Inc.
License: Free Personal
123D is an entry-level design software, ideal for beginners and educators, offering easy-to-use modeling tools and integration with Autodesk's ecosystem. In contrast, MODO is a professional-grade software that provides advanced sculpting, rendering, and animation capabilities, making it suitable for visual effects and game development.