Payment Rails has launched its Global Payout API which provides applications payout capabilities such as international ACH, real-time currency conversion, and global mass payouts. The platform provides access to a network for sending payouts using SWIFT, local banks, and other methods.
Dwolla is an extremely innovative Payment API and the site allows you to transfer money with one of the least payment charges. We have covered Dwolla before here. Here is an interview with Michael Schonfeld, Developer Evangelist of Dwolla API.