Essentially, myOneLogin is a hosted service that customers can use for their own systems without installing any additional hardware or software on-site or on their devices. Although the service can work with any behind-the-firewall browser-based application, its true potential is in providing SSO services to new hosts of cloud-based applications that are sneaking their way into the enterprise today. Applications like Salesforce, Google Apps, Zoho, Outlook Web Access, Yahoo Mail, WebEx, WordPress, Picasa, Amazon, and LinkedIn are just a handful of the hundreds upon hundreds of supported cloud apps.

...For applications like Google Apps, Salesforce, and WebEx, and some internally-used enterprise applications, SAML (Security Assertion Markup Language) can be used. SAML even works with a couple of VPN providers - Juniper SSO VPN and Microsoft's Internet Access Gateway. That's handy for companies wanting to support both internal and cloud-based applications. For other systems, myOneLogin acts as a password proxy, learning the username/password combination and then providing it to the requesting application.