Guardian vs. DailyCred vs. OmniAuth

Avoid dealing with OAuth logic in your code, and spend more time creating your product. Guardian reduces the OAuth footprint in your code to a single request. Built with modularity in mind, Guardian leverages plugins to handle OAuth flows, should you encounter a flow that Guardian doesn't handle, create a small flow plugin to do so and carry on. Guardian comes with 5 pre-made plugins that cover 99% of OAuth services.

Everything you need is included: email verification, password resets, session cookies, and all the UI you need for sign in, and sign up. Skip all this work and get running instantly. If you already have a sign-in system, DailyCred sits side-by-side with the full power of user APIs and dashboards.

OmniAuth is a Ruby authentication framework aimed to abstract away the difficulties of working with various types of authentication providers. It is meant to be hooked up to just about any system, from social networks to enterprise systems to simple username and password authentication.