ITIS
HTTPS CORS ? Free
Integrated Taxonomic Information System
API Endpoint
https://www.itis.gov/ws_description.htmlMore Science & Math APIs
Multiple astronomy data sources
HTTPS CORS ? Free
Curated research-sharing platform: physics, mathematics, quantitative finance, and economics
HTTPS CORS ? Free
Render LaTeX equations in PNG, GIF, SVG, EMF, PDF, JSON, or download formats with styling options
HTTPS CORS ? Free