The Organisation for Economic Co-operation and Development's (OECD) online library of statistical data, books, and journals. It focuses on economics, business, education, employment, energy, development, and environment.
Statista provides access to recent and relevant statistics & studies on a specific topic. It combines statistical data on international industries from different sources including market researchers, trade organizations, scientific journals, and government databases.
The Factbook provides information on the history, people, government, economy, energy, geography, communications, transportation, military, and transnational issues for 267 world entities