Typeeto - Use Mac’s keyboard to type on iPad, iPhone, Android, etc.
Noizio - Feeling that the noise of the big city is too much for you to bear?
Type2phone - Type2Phone: Use your Mac as keyboard for iOS devices
Noizer - Ambient sounds like Noisli, but free
KeyWi - Use your computer's keyboard to type on your iPhone or iPad
Defonic - Create a unique sound environment at home or in the office