Aaws-record gem, an abstraction for Amazon DynamoDB
A query batching executor for the graphql gem
Record your test suite's HTTP interactions and replay them
Track changes to your rails models
Doorkeeper is an OAuth 2 provider for Ruby on Rails / Grape
Build Ruby on Rails apps 10x faster
Classier solution for file uploads for Rails, Sinatra and others
RailsAdmin is a Rails engine that provides an easy-to-use interface
Intelligent search made easy
Database changes log for Rails
A collection of practical tips can be found at the bottom of this page