Share authentication between application using Devise and Ruby on Rails

Question

As the topic says. How do I share the authentication between different applications on the same server?

Answer 1

What you need is probably a Single Sign On (SSO) solution. Googleing around:

http://en.wikipedia.org/wiki/Central_Authentication_Service
http://code.google.com/p/rubycas-server/
http://github.com/relevance/castronaut
http://oauth.net/