Freely Available Web Services/APIs [closed]

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Closed 8 years ago.

开发者_开发技巧 Improve this question

I'm building some Silverlight applications in my spare time, and I wanted find some freely available web services or APIs that I can call. Any suggestions?

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There is a massive list at Yahoo, exposed via YQL (yahoo query language). It even exposes sites that do not have web services as web services.

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There's the Google API (there are a lot of Gogle APIs, to tell the truth) and the Stack Overflow API to name a couple.

Hmm... let's add some more:

• Stack Overflow API
• Google API
• Google Maps API
• Yahoo Maps API
• Bing Maps API

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Facebook - http://developers.facebook.com/docs/api

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WSDL Web service directories:

• http://www.service-repository.com/
• http://www.xmethods.net/

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There'a a whole website which specializes in just such services, though not only free ones:

ProgrammableWeb - Mashups, APIs, and the Web as Platform

They have a tagline "Keeping you up to date with APIs, mashups and the Web as platform."

As of today they claim to list 7,144 APIs and 6,759 Mashups.

(I'm not affiliated in any way but I often stumble across it when searching for web services and has made various useful discoveries thanks to them.)