Marune - Log your martial arts journey & connect with other athletes
SVG Backgrounds - Customize, scalable backgrounds and patterns for free
Gymdesk - Gym management software you actually want to use - Manager-friendly software that simplifies and automates your gym operations. 30-day free trial!
MagicPattern - The best design toolbox with 10+ tools for anyone
Games on GitHub - A list of popular/awesome videos games, add-ons, maps, etc.
Patternify - The CSS pattern generator