From The APP Lab:
The fastest way to message anyone from your contacts, no matter what service they're on. Once you'll have connected your Twitter, Facebook and Gmail accounts, you'll be able to start sending DMs (twitter), Private Messages (Facebook), or Emails (Gmail). How many times a day do you forget to email someone because you're doing too many things at a time on your desktop? Right, it takes too many clicks to send a message to someone, and that's what we wanted to solve. Note: We only let you create private conversations from Swifty.
Swifty is a menu bar application that is being called by clicking on the orange icon, or even better, setting up a keyboard shortcut from the settings. Start typing the recipient's name, the app starts displaying your contacts from Gmail, Twitter or Facebook, select them, type your text, and send using Command + Enter.
We've essentially created a mouse-less experience to message your contacts, hence hyper-fast.