For use in Windows, this Java library interfaces with 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. Extensive documentation, including code examples, is available in the Developer Documentation and at the API website.
DarkmindFX introduced an API that streamlines access to company financial data. DarkmindFX started with SEC-regulated companies, specifically the S&P 500. Users can easily access balance sheet and other data from companies' SEC filings. The S&P 500 is the starting point with expansion planned.