Wharton Research Data Services (WRDS) provides a uniform web interface to various current and historical datasets in finance, economics and banking, from multiple sources. Some of those are: Standard & Poor’s Compustat, the Center for Research in Security Prices (CRSP,) Mergent, Dow Jones, the Federal Reserve, and the Chicago Board Options Exchange.
WRDS is designed primarily for research requiring the use and manipulation of large data files.