Probably https://rails-assets.org/ https://rails-assets.org/, you add it as a source in your Gemfile and then add gems based on the scheme "gem 'rails-assets-BO

Probably https://rails-assets.org/ https://rails-assets.org/, you add it as a source in your Gemfile and then add gems based on the scheme "gem 'rails-assets-BOWER_PACKAGE_NAME'"