PixPlant!

Crazybump generates lighting maps from 2D textures. It supports ambient occlusion (AO) maps, bump maps, normal maps, and more.

Patternshop is a tool to create textures for fabric design.

Substance Designer is a node-based non-destructive application for material authoring. Edit complete texture sets fast with the non-linear workflow and see your changes apply simultaneously to all your outputs.

On the surface, Filter Forge is just a Photoshop plugin, a pack of filters that generate textures, create visual effects, enhance photos, process images. However, there are 3 things that make Filter Forge unique:

Quixel Suite is a bundle of tools for creating amazing materials for use in realtime applications.

NeoTextureEdit is an open source (GNU LGPL v. 3) easy to use graph-based procedural seamless texture editor. Using continuous basis functions it can generate arbitrary resolution images without quality degradation. Its main purpose is to produce high quality textures for real time rendering applications that can be stored in a few kB and synthesized on application startup. But it can also be used to generate off-line images.

Converts a bitmap into a seamless PBR material, including normal, AO, roughness and metallic.

MindTex is a normal map generation utility for game developers and 3d professionals. Built to rival the competition in quality without the steep price, whether you want to generate a normal, height, specular, gloss, self-illumination, occlusion, or reflection map, you can easily do it in seconds flat from a single source texture with MindTex.

Njob is a simple tool that supports a number of filters related to normalmapping and texture creation. I’ts key design philosophies are:

Texture Studio is all you need to produce professional quality textures for use in games and tiled backgrounds. Texture Studio includes a set of integrated tools, all extremely useful for creating high quality seamless textures. Texture Studio is so easy to use, a photograph can be converted to a smoothly tiling, seamless texture with a single click. Alternately, you can adjust settings to fine-tune the look of the results.

Genetica is a powerful node-based texture generator for making tiling or seamless textures for games or other 3D work.

Texture Maker is a seamless texture generator and designer. The application contains everything needed to create seamless textures for use in 3D rendering packages, game development, web graphics, image and video editing.