BetTip
Open Data
Lottery draw results for UK49s, Gosloto and South African National Lottery
No keyCORSHTTPS
Free Open Data APIs
Free public APIs for open data, each one verified and kept up to date.
78 listed · 44 need no key · 18 work in the browser
CoworkingView
Open Data
The CoworkingView API provides access to a comprehensive catalogue of coworking spaces, allowing users to retrieve information about properties, operators, and local features. It includes endpoints for querying property details, operator profiles, market rates, and geographical data without requiring an API key.
No keyCORSHTTPS
CuttingToolsAI
Open Data
Cross-brand carbide insert grade equivalents by ISO application class
No keyCORSHTTPS
EOSL
Open Data
Hardware end-of-sale and end-of-service-life dates by part number, source-linked
No keyCORSHTTPS
Is It Safe to Travel
Open Data
Daily travel-safety scores and 5 risk pillars for 248 countries, from gov advisories and indices
No keyCORSHTTPS
LottoLens PH
Open Data
Fixed Philippine PCSO draw results and schedules with row-level provenance
No keyCORSHTTPS
Microlink.io
Open Data
Extract structured data from any website
No keyCORSHTTPS
Onyx Bazaar
Open Data
Free public leaderboard of x402 paid HTTP services indexed from Coinbase CDP discovery API
No keyCORSHTTPS
Open Scholarships
Open Data
Free, openly-licensed directory of US scholarships and student aid from official sources
No keyCORSHTTPS
PayCrunch
Open Data
US wages for 1,008 occupations nationally and by state, from BLS OEWS May 2025, static JSON, CC BY 4.0
No keyCORSHTTPS
SlashYear
Open Data
86,902 historical events as JSON, each quoted from a cited Wikipedia revision
No keyCORSHTTPS
University of Oslo
Open Data
Courses, lecture videos, detailed information for courses etc. for the University of Oslo (Norway)
No keyCORSHTTPS
Voidly
Open Data
Internet censorship measurements, incidents, and ISP-level blocking data across 126 countries
No keyCORSHTTPS
Website & Web-App Cost Data
Open Data
Web-project cost benchmarks by platform across 6 markets (build, hosting, 3-year TCO, hourly rates), CC BY 4.0
No keyCORSHTTPS
18F
Open Data
Unofficial US Federal Government API Development
No key
49 Gallery Historical Data
Open Data
Normalized historical records and 25 daily-updated reference series
No keyHTTPS
API Setu
Open Data
An Indian Government platform that provides a lot of APIS for KYC, business, education & employment
No keyHTTPS
Archive.org
Open Data
The Internet Archive
No keyHTTPS
Big Data Explained
Open Data
Cloud data warehouse list prices, read daily from AWS and Azure pricing APIs, with price history
No keyHTTPS
BotsArchive
Open Data
JSON formatted details about Telegram Bots available in database
No keyHTTPS
BTU Graph
Open Data
Source-reviewed energy company knowledge graph and directory exports
No keyHTTPS
Callook.info
Open Data
United States ham radio callsigns
No keyHTTPS
CollegeScoreCard.ed.gov
Open Data
Data on higher education institutions in the United States
No keyHTTPS
French Address Search
Open Data
Address search via the French Government
No keyHTTPS
All 78 Open Data APIs
- BetTip
- CoworkingView
- CuttingToolsAI
- EOSL
- Is It Safe to Travel
- LottoLens PH
- Microlink.io
- Onyx Bazaar
- Open Scholarships
- PayCrunch
- SlashYear
- University of Oslo
- Voidly
- Website & Web-App Cost Data
- 18F
- 49 Gallery Historical Data
- API Setu
- Archive.org
- Big Data Explained
- BotsArchive
- BTU Graph
- Callook.info
- CollegeScoreCard.ed.gov
- French Address Search
- Fruits
- i6eal Open AI Data
- Lowy Asia Power Index
- ModelPartFinder Error Codes
- MostExpensiveWatches
- Nobel Prize
- Open Data Minneapolis
- openAFRICA
- OpenSanctions
- PublicDataHub
- Quandl
- Rope Drop News
- Statistics of the World
- Teleport
- Tilth
- Umeå Open Data
- Universities List
- Urban Observatory
- Warnely
- Wikipedia
- Black History Facts
- Joshua Project
- K-Data Gate
- Pan Africa Data
- Accommodation API
- AcreLens
- Benzokolonka API
- CARTO
- CEPiK API
- CivicFeed
- Data.gov CKAN API
- eLife Sciences API
- Enigma Public
- Enigma Public
- GENESIS
- InfraNode
- Kaggle
- LinkPreview
- Metropolitano de Lisboa
- Microburbs
- Nasdaq Data Link
- NPPES NPI Registry
- Open Data Hub API
- Open-Elevation API
- OpenCorporates
- Parlament Open Data
- PeakMetrics
- Recreation Information Database
- Registrum
- Scoop.it
- Socrata
- UPC database
- Wikidata
- Yelp
Free Open Data APIs — common questions
Counts and timings below come from our own scheduled checks of this category.
How many free open data APIs are there?
We track 78 in this category, of which 71 responded at our last check. 44 of them need no API key.
Which open data APIs work without an API key?
44 of the 78 entries here need no credential. Filter this page by "no key" to see them, or browse the no-key collection for every keyless API across all categories.
Can I use these open data APIs in a browser app?
14 entries in this category need no key and return CORS headers, which is the combination that lets you call them straight from client-side JavaScript. The rest need a server or a proxy in between.
Which is the fastest free open data API?
Of the keyless options that responded at our last check, 49 Gallery Historical Data was quickest at a median 106 ms. Speed is only one factor — coverage and licensing usually matter more — but it is measured here rather than claimed.
How do you know these APIs still work?
We call every listing on a schedule and record the status code, response time and whether CORS headers came back. Those results drive the badges on this page. Across the whole catalogue, 487 of 2,712 entries were not responding at the last full run, which is the sort of thing an unchecked list never tells you.