Open source alternatives to Substance 3D Painter

One project on starwire does the same job. Ranked by how much of what Substance 3D Painter does each one covers, read from its README and website. Ties go to the most active.

What Substance 3D Painter does

Paint textures directly on 3D modelscore
Layer-based PBR materials and maskscore
Export texture maps for game engines and rendererscore
Smart materials and procedural generators
Baking mesh maps
Real-time viewport rendering
Material and brush library

Each dot in the table is one job, in this order. Square dots are core jobs and count double. Full means yes, half means partly. "See the evidence" under a project shows the line behind each one. Coverage is what a project documents, not how well it works or how hard it is to move to. How we score this

Project	Covers	Stars	Commits, 12 weeks	Last release	Closed vs opened	Setup	License
armorpaintOpen source 3D texturing and painting app with animation tools	Replaces it95%	5.5k+25	714	2 months ago	100%	Install like an app	Custom license
Covers all 3 core jobs. Partly: Material and brush library.See the evidence Paint textures directly on 3D modelscoreYesDrag drop your 3D models and start painting. Layer-based PBR materials and maskscoreYesBuild fill layers and masks with material nodes Export texture maps for game engines and rendererscoreYesexport the PBR textures to disk Smart materials and procedural generatorsYesPaint with fully procedural materials Baking mesh mapsYesBake texture maps for high-poly models Real-time viewport renderingYesPath-traced viewport rendering Material and brush libraryPartlyCreate seamless textures from text prompts

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