Free, properly licensed resources for architects, engineers and 3D designers. Each guide explains what the library offers, its file formats, how to use it in your software, and what its license allows. Downloads always come from the official source.
Textures · HDRI · 3D
Poly Haven
Free CC0 PBR textures, HDRI skies for lighting, and 3D models, ready for Blender, 3ds Max and real-time renderers.
Building materials
ambientCG
Free CC0 PBR materials for concrete, brick, tile and stone, with real-world dimensions for architectural visualization.
CAD parts
FreeCAD parts library
Ready-made engineering parts for FreeCAD, plus the Fasteners and BOLTS tools — and why each source has its own license.
We do not rehost these files: every guide links to the library’s official site. Figures in the guides are dated 9 November 2026.
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