Ruby on Rails is an iconic, free and open source, server-side web application framework released under the liberal MIT license. The Ruby-based framework has helped millions of developer make their ideas a reality. The framework is opinionated and promotes best standards and practices for web development. When combining that with a community that is open, helpful and guiding, it's not hard to see why Ruby on Rails is one of the most loved web application frameworks to this day. Ruby on Rails is also used by industry giants like Basecamp, HEY, GitHub, Shopify, Airbnb, Twitch, SoundCloud, Hulu, Zendesk, Square, Cookpad.