YouClap - Challenge and be challenged by friends and brands.
Pun Finder - Enter any word and get 'hilarious' puns to share
Spinnner - Challenge your friends to a spin-off (literally)
CSS Puns - A stylish website full of hilarious CSS puns
UXTesting - Discover how your mobile users feel
Manything - Manything converts your spare iOS device into a free home monitoring camera in seconds.