MultiBit

MultiBit is a lightweight "thin client" Bitcoin wallet for Windows, Mac OS X and Linux based on bitcoin. Its main advantages over the original Bitcoin client include support for opening multiple wallets simultaneously, and not requiring the download of the entire multi-gigabyte blockchain (2.6 GB as of July 2012 ). The project is lead by UK developer Jim Burton.

Features

 * Multiple wallets can be open at the same time


 * Synchronizes with the network in minutes


 * Shows the last BTC <--> USD rate from VirtEx and other exchanges


 * Import and export your private keys


 * Chart of your balance over the last 30 days


 * Free and open source (MIT license)


 * Localized in a variety of languages

History
MultiBit was announced on September 12, 2011.