List of about 100 APIs
A survey of API documentation sites
The following are about 100 openly accessible REST APIs that you can browse as a way to look at patterns and examples. Most of these REST API links are available from programmableweb.com. I initially started gathering a list of the APIs in Programmableweb's "Most Popular" category, but then I just started adding links as I ran across interesting APIs.
- Google Places API
- Twitter API
- Flickr API
- Facebook API
- Youtube API
- eBay API
- Amazon API
- Twilio API
- Last.fm API
- Bing API
- Delicious API
- Google Cloud API
- Foursquare API
- Google Data API
- Dropbox API
- Splunk API
- Flattr API
- Docusign API
- Geonames
- Adsense API
- Box API
- Amazon API
- Linkedin API
- Instagram API
- Yahoo BOSS API
- Yahoo Social API
- Google Analytics API
- Yelp API
- Panaromio API
- Facebook API
- Eventful API
- Concur API
- Paypal API
- Bitly API
- Hostip API
- Reddit API
- Netvibes API
- Rhapsody API
- Donors Choose
- Sendgrid API
- Photobucket API
- Mailchimp
- Basecamp API
- Smugmug API
- NYTimes API
- USPS API
- NWS API
- Evernote API
- Stripe API
- Parse API
- Opensecrets API
- Compete API
- CNET API
- Amazon API
- Hoiio API
- Citygrid API
- Mapbox API
- Groupon API
- AddThis Menu API
- Yahoo Weather API
- SimplyHired API
- Crunchbase API
- Zendesk API
- nDango API
- Ninja Blocks API
- Pushover API
- Pusher API
- Pingdom API
- Daily Mile API
- Jive
- IBM Watson (uses Swagger)
- HipChat API
- Stores API
- Alchemy API
- Indivo API 1.0 and Indivo API 2.0 on readthedocs platform
- Socrata API
- Github API
- Mailgun API
- RiotGames API example of Swagger
- Basecamp API example of Github
- UserApp API
- Kimono Labs API
- SwiftType API
- Snipcart API
- VHX API
- Polldaddy API
- Gumroad API
- Formstack API
- Livefyre API
- Salesforce Chatter RESt API
- Rotten Tomatoes API
- Github
- Context.io
Programmableweb.com: A directory of API doc sites on the open web
For a directory of API documentation sites on the open web, see the Programmableweb.com. You can browse more than 13,000 web APIs.
Note that Programmableweb only lists web APIs, meaning APIs that you can access on the web. They don't list the countless internal, firewalled-off APIs that many companies provide at a cost to paying customers. There are many more thousands of firewalled, private APIs out there that most of us will never know about.
Look at 5 different APIs
Look at about 5 different APIs (choose any of those listed on the page). Look for one thing that the APIs have in common.