Adobe Substance 3D Painter is described as 'Advanced software for 3D asset texturing with smart materials and real-time rendering for lifelike results, suitable for both photorealism and stylized art' and is a 3D Painting app in the photos & graphics category. There are more than 10 alternatives to Adobe Substance 3D Painter for a variety of platforms, including Windows, Mac, Linux, Web-based and Self-Hosted apps. The best Adobe Substance 3D Painter alternative is ArmorPaint. It's not free, so if you're looking for a free alternative, you could try Material Maker or Quixel Mixer. Other great apps like Adobe Substance 3D Painter are 3D-Coat, InstaMAT, Agama materials and Quixel Suite.
Armor paint is a standalone software for 3d texture painting in PBR. It is entirely GPU based, and supports windows and linux.
Most of the Substance Painter features included for free. Nice interface and Open Source. It's not officially released yet so ther binaries are paid for (donation) until it's 1.0 release.
Open Source, Free, Blender and Armor Integration.
3D-Coat is the one application that has all the tools you need to take your 3D idea from a block of digital clay all the way to a production ready, fully textured organic or hard surface model.
3dCoat is sculpting software that also textures. No node-based texture creation here.
Material Maker is a free and open-source, procedural texture authoring tool based on Godot Engine. Its user interface is based on Godot's GraphEditor: textures are described as interconnected texture generators and operators.
InstaMAT offers a comprehensive solution for procedural material and asset creation, scalable texturing, and data-driven asset pipelines where instead of texturing a specific asset, you're now texturing an entire class of assets using a previously established workflow.
Being able to texture all my assets procedurally with a single project is a gamechanger
Agama materials is software for creating PBR materials and painting 3d models. You can create materials and use them for painting models, or you can use pre-made textures. Simple creating of procedural materials.
Quixel was founded in 2011 by Teddy Bergsman and Waqar Azim, based on the vision of substantially speeding up how creators build digital environments, by giving them access to a vast and ever-expanding library of 3D building blocks, and easy-to-use tools to greatly simplify the...
Has a LOT of features but does require a current version of photoshop
MARI is a creative texture-painting tool that can handle extreme projects. MARI was developed at Weta Digital to handle the massively complex, highly detailed look development work demanded of the texture department by projects such as District 9, The Lovely Bones, and Avatar.
Paint 3D is Microsoft's totally rebuilt and enhanced version of Microsoft Paint built for Windows 10 and with extensive 3D support as well as other helpful, long-needed additions like pen support and easier cropping feature.
MS 3d Paint does not have the same feature set as Adobe Substance 3D Painter
PixaFlux is a node based image processing application. PixaFlux creates and edits images in a non destructive way, using a node graph to organize the workflow without restrictions of size, position or color mode.
PixaFlux is more similar to Substance Designer rather than Substance Painter.
A game engine written in Python, extending support across multiple GPU devices with 3D rendering, PBR Renderer and much more.
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Armor Paint is a True Altertative, do almost all of the work of Substance Painter, community supported, Open Source, Blender and Armor integration.