CKEditor - Real-time collaborative future-ready rich text editor
Python - Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.
TinyMCE - TinyMCE is a content editor that functions as a plug-in for Wordpress websites.
Java - A concurrent, class-based, object-oriented, language specifically designed to have as few implementation dependencies as possible
Summernote - Summernote is a JavaScript library that helps users create WYSIWYG editors online.
Rust - A safe, concurrent, practical language