Stealthy: Secret Messenger - Chat anonymously with friends & strangers
Turtle - New kind of anonymous messaging app
Whisper.sh - Whisper is the best place to express yourself online. Connect with likeminded individuals and discover the unseen world around you.
Kruzo for iOS - Send an anonymous message and make someone's day brighter
YouHue - A fun new way to ask "How are you?"
throwaway - throwaway is an in-browser messaging app.