Ruby is a dynamic, reflective, object-oriented, general-purpose programming language. It was designed and developed in the mid-1990s by Yukihiro "Matz" Matsumoto in Japan.
According to its authors, Ruby was influenced by Perl, Smalltalk, Eiffel, Ada, and Lisp. It supports multiple programming paradigms, including functional, object-oriented, and imperative. It also has a dynamic type system and automatic memory management.
Ruby on Rails, often called RoR or simply Rails, it's an open source framework for web applications written in Ruby
Django it's an open source framework for web applications development, written in Python
Python is a widely used general-purpose, high-level programming language