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 - [pgcli-rails](https://github.com/mattbrictson/pgcli-rails) - A replacement of `rails:dbconsole` command to manage Postgresql. [:red_circle:](https://rubygems.org/gems/pgcli-rails)
 - [premailer-rails](https://github.com/fphilipe/premailer-rails) - A gem to handle email styling. [:red_circle:](https://rubygems.org/gems/premailer-rails)
 - [prerender_rails](https://github.com/prerender/prerender_rails) - A gem to prerender JavaScript-rendered pages. [:red_circle:](https://rubygems.org/gems/prerender_rails)
+- [rabarber](https://github.com/enjaku4/rabarber) - A gem to handle role-based authorization. [:red_circle:](https://rubygems.org/gems/rabarber)
 - [rails-erd](https://github.com/voormedia/rails-erd) - A gem to generate entity-relationship diagram. [:red_circle:](https://rubygems.org/gems/rails-erd)
 - [rails-mermaid_erd](https://github.com/koedame/rails-mermaid_erd) - A gem to interactively generate entity-relationship diagram in image or Markdown format. [:red_circle:](https://rubygems.org/gems/rails-mermaid_erd)
 - [rails-settings-cached](https://github.com/huacnlee/rails-settings-cached) - A gem to manage global settings as key-value pairs. [:red_circle:](https://rubygems.org/gems/rails-settings-cached)