OpenID integration

Question

How can I integrate OpenID into my website so people can login with their Google, Twitter, or Facebook credentials?

Answer 1

Did you bother to look at the OpenID site?

• Here's a list of libraries, there's a ton of options for PHP.
• Here's a list of plugins for popular content management scripts.
• Janrain User Management Platform (JUMP)

Answer 2

You need to use a mixture of technologies to achieve that. OpenID is technology that will allow your users to login with Google (and Yahoo and many other providers), Twitter and Facebook both are using OAuth protocol but it's easier to grab a API specific for given vendor.

I've implemented a ready made solution (working demo) that makes use of LightOpendID (to allow login with Google/Yahoo account), Facebook and Twitter APIs, you can grab it on github.