LeoCAD

Overview

LeoCAD is a free open‑source CAD application that allows users to create virtual LEGO® models with intuitive tools. It supports a large built‑in library of parts, multi‑platform support on Windows, macOS, and Linux, and can export models to multiple formats for rendering and build instructions. Designed for hobbyists, educators, and designers, LeoCAD combines simplicity with powerful features for digital LEGO® design.

Key features

• Virtual LEGO® modeling
• Large parts library
• Multi‑platform support
• Export to formats
• Build instructions generation