Datamuse
Education•Free
Operational
Word-finding query engine
Response
60ms
Auth
No Auth
CORS
Yes
HTTPS
Yes
wordsrhymessynonyms+1
Browse APIs
Showing 6 of 6 APIs
Free Dictionary API
Education•Free
Operational
Definitions, phonetics, and examples for English words
Response
85ms
Auth
No Auth
CORS
Yes
HTTPS
Yes
dictionarywordsdefinitions+1
NASA APIs
Education•Free
Operational
NASA data including APOD, Mars Rover photos, and satellite imagery
Response
190ms
Auth
API Key
CORS
Yes
HTTPS
Yes
spaceastronomyscience+1
Numbers API
Education•Free
Operational
Interesting facts about numbers
Response
80ms
Auth
No Auth
CORS
Yes
HTTPS
No
numbersfactsmath+1
Open Library
Education•Free
Operational
Information about books, authors and more
Response
300ms
Auth
No Auth
CORS
Yes
HTTPS
Yes
bookslibraryauthors+1
SpaceX
Education•Free
Operational
Company, vehicle, launch, lander, and starlink data
Response
120ms
Auth
No Auth
CORS
Yes
HTTPS
Yes
spacerocketslaunches+1