Crunchbase (there is a fee) – provides business information about private and public companies, including funding, founding members, people in leadership positions, mergers and acquisitions, news, and industry trends https://www.crunchbase.com
FEC Campaign Finance Data – shows how candidates and committees raise and spend money in federal elections
https://www.fec.gov/data
Little Sis – details the connections between powerful people and organizations
https://littlesis.org
Open Corporates – displays company information, including ownership and paperwork filings
https://opencorporates.com
Open Secrets – tracks the flow of money in U.S. politics
https://www.opensecrets.org
Truth Finder (there is a fee) – crawls through billions of public records from all over the United States and compiles this information on an individual in a report
https://www.truthfinder.com
USA Spending – presents federal spending information
https://www.usaspending.gov
WhoIs – stores detailed information associated with the person, group, or organization registering a domain name
https://www.whois.com/whois