* [Doorkeeper v5.9.6](https://github.com/doorkeeper-gem/doorkeeper) – OAuth 2 provider for Ruby on Rails and Grape applications.

* [Doorkeeper::JWT v0.4.4](https://github.com/doorkeeper-gem/doorkeeper-jwt) – Doorkeeper::JWT adds JWT token support to the Doorkeeper OAuth library, generating and signing access tokens from configurable payloads and secrets.