alcancepl 

Protect your users' data while allowing them to programmatically access it, including from other web applications, all without disclosing their login credential with you to 3rd parties.

Allow your customers to take their identities from your site with them as they visit other sites that accept OpenID as relying parties. Set up single-sign-on solutions within your organization using a... More information

As an OpenID 2.0 relying party or provider, include an OAuth 1.0 access token in the same user authorization/authentication step so that the relying party may also directly access the user's data on the... More information

Allow your web forms or MVC web site, REST or WCF service, or any other HTTP(s) service to accept OAuth 2 access tokens as a means of authorization so your users don't have to share their password with 3rd... More information

Increase conversion rates to your web site by lowering the bar to create an account with your site, by allowing customers to use accounts they already have with other sites, such as Google and Yahoo!