Patterninja - Create patterns online
Isometric Game Art Pack - Extensive library of game art for indie devs
Pattern Monster - Pattern Monster is a pattern maker app to create vector patterns for your projects
Isometric - Create beautiful, abstract works of art & optical illusions
Patternizer - Create awesome background patterns in just a few minutes
Indie Boost - A video game discovery software used by Publishers, Press, YouTubers, and Streamers.