Get Substance Painter Alternative Free US. It supports the entirety of the 3d pipeline—modeling, rigging, animation, simulation, rendering, compositing, video editing, and motion tracking. Plus, it also has a free but, i'll give the best substance painter alternative title to zbrush.
Quixel mixer is a pbr texture map generation tool.
Also substance painter alternative software for mac and in ubantu you can install it with almost same features. Substance painter still has a lot of more features, not to speak of substance designer, but for quick procedural texturing bats is imho a good solution. 100% safe and secure ✔ free freeware products can be used free of charge for both personal and professional (commercial use). With an elegant interface, zbrush.