Devise vs. Satellizer vs. DailyCred

Devise is a flexible authentication solution for Rails based on Warden

Satellizer is a simple to use, end-to-end, token-based authentication module for AngularJS with built-in support for Google, Facebook, LinkedIn, Twitter authentication providers, plus Email and Password sign-in method. You are not limited to the sign-in options above, in fact you can add any OAuth 1.0 or OAuth 2.0 provider by passing provider-specific information during the configuration step.

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.