This new site contains the full World Development Indicators (WDI), Global Development Finance (GDF), and Africa Development Indicators (ADI), along with other World Bank databases, including Global Economic Monitor (GEM) (up till now these databases were only availabale via subscription). The new site is designed for both novice and advanced users: you can access basic data by country, topic, and region, as well as download datasets in Excel, CSD, XML, and other formats. Users can also access and retrieve data through the DataBank (a platform similar to that of the previous WDI, GDF and ADI platforms). The site links to the World Bank Data API (encouraging developers to create new applications using the data), DataFinder, and World Bank's new iPhone application.
For a full list of available data sets available go to: http://data.worldbank.org/data-catalog. Most data is available in English, Arabic, French, and Spanish.