Ruby on Rails, or simply Rails, is a server-side web application framework written in Ruby under the MIT License. Developed by David Heinemeier Hansson
License: Open Source
Ruby on Rails is a powerful framework with a rich ecosystem, making it ideal for large applications and RESTful architecture, but it has a steeper learning curve. In contrast, web2py is lightweight and easier to learn, suitable for rapid prototyping and small to medium applications, but it lacks some of the advanced features and community support that Rails offers.