api_on_rails by madeindjs

Simple (and safe*) token authentication for Rails apps or API with Devise. Maintained by gonzalo-bulnes on GitHub, where it has earned 1,505 stars from the community.

Ultra lite authorization library. Maintained by dzaporozhets on GitHub, where it has earned 321 stars from the community.

JWT authentication solution for Rails APIs. Maintained by Gokul595 on GitHub, where it has earned 279 stars from the community.