Adobe Substance 3D Sampler (the successor of Substance Alchemist) is a very excellent 3D material/texture production and management software, developed by Allegorithmic from France, which was acquired by Adobe in 2019. It builds on Substance Alchemist and makes the process of creating materials much easier.

xTex is a very fast 3D texture/material production software. It is able to create seamless maps faster than ever before - directly generates texture from a scanner or an image. If you need original, highly customizable, and high-quality textures, then give xTex a try. Even without a scanner, it still can be used to create seamless texture materials with the realistic scanning style.