ArtStation - Advanced Procedural Planet Generator With Texture Map Generation + 20 Different Biome Shaders - Blender 3.0+ | Resources
Planet Texture Generator
Procedural Planets | Jason K. Smith
Planet Generator (Texture)
Microbot's Planet Tools - MICROBOT
Procedurally generated planets, with data for elevation, rivers, soil depth, soil texture, rock types, minerals, climate and plenty more. : r/proceduralgeneration