OpenSanctions
HTTPS CORS Free
Data on international sanctions, crime and politically exposed persons
API Endpoint
https://www.opensanctions.org/docs/api/More Open Data APIs
Unofficial US Federal Government API Development
HTTP CORS ? Free
Normalized historical records and 25 daily-updated reference series
HTTPS CORS Free
Land suitability scoring API for any US property: off-grid, rural, recreational, investment
HTTPS CORS ? apiKey