Company Information

http://www.abi.org/

Numerous annual reports available. Includes a UK version.
http://www.annualreports.com/

Corporate and Business filings (some organized by state)
http://www.llrx.com/2010/02/business-intelligence-online-resources/

Largest and most-used, independent evaluator of non-profit organizations.
http://www.charitynavigator.org

Financials for 700,000 U.S. non-profit companies.
http://guidestar.org

Comprehensive resource aims to help new entrants and existing business owners with research on small business. (CHOICE Reviews, Oct. 2017)