Marune - Log your martial arts journey & connect with other athletes
Pattern Monster - Pattern Monster is a pattern maker app to create vector patterns for your projects
Gymdesk - Gym management software you actually want to use - Manager-friendly software that simplifies and automates your gym operations. 30-day free trial!
Patterninja - Create patterns online
Games on GitHub - A list of popular/awesome videos games, add-ons, maps, etc.
Patternizer - Create awesome background patterns in just a few minutes