iDigBio
HTTPS CORS ? Free
Access millions of museum specimens from organizations around the world
API Endpoint
https://github.com/idigbio/idigbio-search-api/wikiMore Science & Math APIs
Multiple astronomy data sources
HTTPS CORS ? Free
Curated research-sharing platform: physics, mathematics, quantitative finance, and economics
HTTPS CORS ? Free
Access the world's Open Access research papers
HTTPS CORS ? apiKey