Compare Science & Math APIs
Deep dive into the technical specifications of 33 Science & Math APIs. Use this side-by-side comparison to evaluate which service best fits your architectural requirements.
Values marked * and scores marked Measured come from calling the endpoint ourselves; the rest come from listing metadata. See the measurement log.
| API Identity | Score | Authentication | HTTPS | CORS | Speed | Difficulty | Brief |
|---|---|---|---|---|---|---|---|
| arcsecond.io | 82 A Est. | No Auth | ? | 226ms | Beginner | arcsecond.io is a free astronomy API that aggregates data from multiple space databases, including s... | |
| arXiv | 0 F Est. | No Auth | ? | 71ms | Beginner | arXiv provides programmatic access to curated research-sharing platform: physics, mathematics, quant... | |
| CORE | 39 F Measured | API Key | No * | 6021ms | Intermediate | CORE provides access to millions of open-access research papers from repositories and journals world... | |
| GBIF | 70 B Measured | No Auth | Yes * | 294ms | Beginner | GBIF (Global Biodiversity Information Facility) is a free, open API providing access to hundreds of ... | |
| iDigBio | 60 C Measured | No Auth | Yes * | 1396ms | Beginner | iDigBio is a free API that gives you access to millions of digitized natural history museum specimen... | |
| inspirehep.net | 62 C Measured | No Auth | Yes * | 1036ms | Beginner | INSPIRE-HEP is a free REST API for the High Energy Physics literature database, covering papers, aut... | |
| isEven (humor) | 76 B Measured | No Auth | Yes * | 147ms | Beginner | isEven is a humorous free API that tells you whether a number is even or odd. It is intentionally ov... | |
| ISRO | 92 A+ Est. | No Auth | No | 34ms | Beginner | ISRO is a free, no-auth API that provides detailed information about the Indian Space Research Organ... | |
| ITIS | 46 D Measured | No Auth | No * | 579ms | Beginner | ITIS (Integrated Taxonomic Information System) is a free API providing authoritative taxonomic data ... | |
| Launch Library 2 | 81 A Measured | No Auth | Yes * | 204ms | Beginner | Launch Library 2 is a free, comprehensive API for spaceflight launches, rockets, missions, and event... | |
| Materials Platform for Data Science | 33 F Measured | API Key | Yes * | 1398ms | Intermediate | The Materials Platform for Data Science (MPDS) API provides access to curated experimental data abou... | |
| Minor Planet Center | 58 C Measured | No Auth | Yes * | 211ms | Beginner | The Minor Planet Center API (via Asterank) gives you access to data about asteroids, comets, and oth... | |
| NASA | 92 A+ Est. | No Auth | No | 173ms | Beginner | The NASA API provides free access to a huge collection of NASA data including the Astronomy Picture ... | |
| NASA ADS | 68 C Est. | OAuth | Yes | - | Advanced | NASA ADS (Astrophysics Data System) is a digital library for astronomy and physics research papers, ... | |
| Newton | 92 A+ Est. | No Auth | No | 47ms | Beginner | Newton is a free microservice API that performs symbolic and arithmetic math calculations — from sim... | |
| Noctua | 87 A Est. | No Auth | ? | 323ms | Beginner | NoctuaSky is a sky observation platform and its API gives you access to astronomical data like star ... | |
| Numbers | 74 B Est. | API Key | No | - | Intermediate | The Numbers API from math.tools provides facts, trivia, and mathematical data about numbers — includ... | |
| Numbers | 74 B Est. | No Auth | No | 196ms | Beginner | Numbers API (numbersapi.com) returns interesting facts about numbers — mathematical, date-based, yea... | |
| Ocean Facts | 0 F Est. | No Auth | ? | - | Beginner | Ocean Facts provides programmatic access to facts pertaining to the physical science of oceanography... | |
| Open Notify | 60 C Measured | No Auth | Yes * | 133ms | Beginner | Open Notify provides real-time data about the International Space Station (ISS) — including its curr... | |
| Open Science Framework | 48 D Measured | No Auth | No * | 891ms | Beginner | The Open Science Framework (OSF) API gives you access to a large open repository of research materia... | |
| Purple Air | 82 A Est. | No Auth | ? | 231ms | Beginner | Purple Air gives you access to real-time air quality data from a global network of community-owned s... | |
| Remote Calc | 92 A+ Est. | No Auth | Yes | 41ms | Beginner | Remote Calc is a simple API that accepts a base64-encoded mathematical expression, decodes it, and r... | |
| SHARE | 70 B Measured | No Auth | Yes * | 251ms | Beginner | SHARE is an open dataset API that aggregates metadata from hundreds of research repositories and aca... | |
| SpaceX | 84 A Est. | No Auth | No | 51ms | Beginner | The SpaceX API is an open-source REST API providing detailed data about SpaceX launches, rockets, ca... | |
| SpaceX | 0 F Est. | No Auth | ? | 203ms | Beginner | SpaceX provides programmatic access to graphql, company, ships, launchpad and launch data via REST A... | |
| Sunrise and Sunset | 82 A Measured | No Auth | Yes * | 186ms | Beginner | The Sunrise and Sunset API returns accurate sunrise, sunset, solar noon, and day length data for any... | |
| Times Adder | 84 A Est. | No Auth | No | 50ms | Beginner | Times Adder is a lightweight utility API that accepts an array of time values and returns their tota... | |
| TLE | 57 C Measured | No Auth | Yes * | 1694ms | Beginner | The TLE API provides up-to-date orbital data for satellites currently orbiting Earth, sourced from N... | |
| USGS Earthquake Hazards Program | 84 A Measured | No Auth | Yes * | 144ms | Beginner | The USGS Earthquake Hazards Program API provides real-time and historical earthquake data from seism... | |
| USGS Water Services | 75 B Measured | No Auth | Yes * | 223ms | Beginner | USGS Water Services provides real-time and historical data on streamflow, water levels, and water qu... | |
| World Bank | 85 A Measured | No Auth | Yes * | 43ms | Beginner | The World Bank API provides access to thousands of development indicators covering economics, educat... | |
| xMath | 0 F Est. | No Auth | Yes | 1ms | Beginner | xMath provides programmatic access to random mathematical expressions via REST API. |