LeoCAD

Free plan

What the maker publishes

Animation tools

Yes source

Building instructions

Users can create building instructions with multiple steps and submodels. source

Editing tools

The basic tutorial covers browsing and searching the parts library, adding pieces, moving and rotating them, and creating model steps. source

Free plan

Yes source

Instructions output

The command-line options include creating an HTML page for a model, and the tutorial says users can print instructions. source

Interface

The interface is designed to help new users start creating models without spending too much time learning the application. source

Library compatibility

LeoCAD is compatible with LDraw's parts library and can use a custom library supplied as a ZIP file or regular folder. source

Model formats

LeoCAD reads and writes LDR and MPD files and is compatible with the LDraw Standard and related tools. source

Notable limitation

The tutorial says ray-traced images can be created if POV-Ray is installed. source

Parts library

LeoCAD uses the LDraw parts library, which the site says contains over 10,000 parts and continues to receive updates. source

Platform access

desktop source

Purpose

LeoCAD is a CAD application for designing virtual models made from LEGO bricks. source

Render engine

both source

Rendering and export

LeoCAD can generate images and export models to Wavefront OBJ, 3DS and COLLADA formats from the command line. source

Security and warranty

The official pages opened provide a GPL v2 license and its no-warranty terms, but do not state security certifications or compliance claims. source

Support and learning

The site provides a basic tutorial and documentation for getting started and more advanced topics. source

Texture mapping

LeoCAD supports texture-mapped primitives through the LDraw TEXMAP extension. source

Trademark disclaimer

The site says LEGO is a trademark of the LEGO Group, which does not sponsor, authorize or endorse LeoCAD. source

Checked against the maker's pages on 12 Oct 2026.