Python - Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.
CKEditor - Real-time collaborative future-ready rich text editor
JavaScript - Lightweight, interpreted, object-oriented language with first-class functions
Summernote - Summernote is a JavaScript library that helps users create WYSIWYG editors online.
Java - A concurrent, class-based, object-oriented, language specifically designed to have as few implementation dependencies as possible
Froala Editor - Froala Editor is a WYSIWYG HTML editor that enables rich text editing capabilities for the applications.