Liste des APIs Web les plus populaires

* Google – http://code.google.com/apis/
* TRYNT Google Pagerank Web Service – http://www.trynt.com/trynt-google-pagerank-api/
* Alexa – http://www.alexa.com/site/devcorner/web_info_services
* Yahoo! Site Explorer – http://developer.yahoo.com/search/siteexplorer/
* Amazon – http://aws.amazon.com
* Technorati – http://technorati.com/developers/
* Blogmarks – http://dev.blogmarks.net/wiki/DeveloperDocs
* Feedburner – http://www.feedburner.com/fb/a/developers
* del.icio.us – http://del.icio.us/help/api/
* Ma.gnolia – http://ma.gnolia.com/support/api
* Digg – http://apidoc.digg.com/
* Flickr – http://www.flickr.com/services/api/
* Twitter – http://twitter.com/help/api
* YouTube – http://www.youtube.com/dev
* Last.fm – http://www.audioscrobbler.net/data/webservices/
* Weather – http://www.weather.com/services/xmloap.html
* GeoURL RSS Feeds – http://geourl.org/news/2005/04/05/rss.html