LIC
LIC (Lego Instructions Creator), developed by Jeremy Czajkowski, is a cross-platform, Python, OpenGL & Qt powered desktop application for creating and editing LEGO instruction books.
LIC imports 3D models, organizes them into submodels, pages & steps, and exports the end result as images or PDF. A rich, WYSIWYG UI editor, which provides a fully interactive preview window along side a drag & drop-enabled navigation tree, to help organize and layout your book. Portions of LIC are based on work of Remi Gagne.
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Original homepage:
LIC first was developed at
The author then moved over the code to github:
As of 2018, he is working on a web-based rewrite called Web LIC.