This C/C++ library for OS X is for the Bloomberg API. The Bloomberg API provides free, unrestricted access to raw financial data on current market trades (either real-time or delayed), reference data on historical information, and records of intraday trading. As part of their Open Market Data Initiative the library is offered under a "free-use" license, which allows unrestricted access to the interface's header files, documentation, and programming examples. Users should note that the OSX libraries are only compatible with OS X 10.7 and later, and can only be used with the Bloomberg Server API and B-Pipe data feed products (not the Desktop API).
We are all familiar with online commerce these days. You want to buy something while shopping on Amazon or any other online destination: You create a profile and enter your credit card number; you purchase physical products, have them mailed to you and get the instant gratification of a digital purchase.
Payleven, the Square equivalent for the world outside of the US, has launched an API to complement its mobile payment device. Prior to the API, use of Payleven's mobile payment device required downloading the Payleven app (similar to Square's current model). However, the API allows developers to integrate Payleven's functionality within third party apps.
microPledge enters the emerging market for small scale financial services. This service allows everyday people to contribute to a common goal that requires something more than higher ideals: money! It is geared specifically toward software development, which makes the microPledge API a niche offering.