Looks great but (and it is a big but), Auth0 has an expensive attached cost: https://auth0.com/pricing https://auth0.com/pricing It also adds a third party dep

Looks great but (and it is a big but), Auth0 has an expensive attached cost: https://auth0.com/pricing https://auth0.com/pricing It also adds a third party dependency, namely Auth0, who hold your auth / user data. I made this mistake once using RPXNow from Janrain. Andrew Arnold described quite correctly why 3rd party auth services are a bad idea: http://blog.nerdbank.net/2009/01/why-using-rpxnow-is-bad-idea.html http://blog.nerdbank.net/2009/01/why-using-rpxnow-is-bad-ide...