Unpaywall
Open-access status and legal full-text links for scholarly articles
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- Public APIs: Science & Math
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SpaceX Company, vehicle, launchpad and launch data - SpaceX GraphQL, Company, Ships, launchpad and launch data
- Sunrise and Sunset Sunset and sunrise times for a given latitude and longitude
- Tallytopia Calculators for finance, health, math, space and sports with step-by-step results
- Times Adder With this API you can add each of the times introduced in the array sended
- TLE Satellite information
- Toolalize Unit and live currency conversion with NIST SI factors, no key needed
- USGS Earthquake Hazards Program Earthquakes data real-time
- USGS Water Services Water quality and level info for rivers and lakes
- World Bank World Data
- WoRMS Marine species taxonomy, synonyms and distributions
- xMath Random mathematical expressions