For developers using OS X the Bloomberg API offers this Python library. OS X users should note that the OSX libraries are only compatible with OSX 10.7 and later, and can only be used with the Bloomberg Server API and B-Pipe data feed products (not the Desktop 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.
Handshake, sales order processing platform, offers the Handshake API that allows developers to integrate Handshake with third party applications and services. Handshake allows users to write, accept, and sync orders across any device or server running the Handshake platform. Additionally, Handshake supports barcode scanning for more streamlined order processing.
CityGrid Media, the company behind local mainstay CitySearch, has announced a new version of its CityGrid API. The service offers developers new access to content, as well as new ways to monetize whatever integrations they might build. The new API provides features now synonymous with local services, such as business listings and coupons. And CityGrid is sharing revenues with developers.