Rich text editors

FreeTextBox

FreeTextBox is a free open-source HTML Editor.

Froala Editor

Froala Editor is a WYSIWYG HTML Editor written in Javascript that enables rich text editing capabilities for applications.

Monaco Editor

Monaco Editor is the code editor that powers VS Code. Monaco Editor is a tool in the text editor category of a tech stack.

Editor.js

Editor.js is a Javascript library which allows developers to implement a block base text editor with plugins on their page.

Etherpad

Etherpad is an open-source, web-based collaborative real-time editor, allowing authors to simultaneously edit a text document, and see all of the participants' edits in real-time, with the ability to display each author's text in their own colour.

PSPad

PSPad is a feature-rich text editor designed for developers and professionals working with text, offering tools for coding, syntax highlighting, and project management.

Ace

Ace is an embeddable code editor written in JavaScript.

TinyMCE

TinyMCE is an online rich-text editor released as open-source software. TinyMCE is designed to integrate with JavaScript libraries, Vue.js, and AngularJS as well as content management systems such as Joomla!, and WordPress.

Trix

Trix is an open-source project from Basecamp, the creators of Ruby on Rails.

WysiBB

WysiBB very simple and functional open-source WYSIWYG BBCode editor based on jQuery.

CKEditor

CKEditor is a WYSIWYG rich text editor which enables writing content directly inside of web pages or online applications. Its core code is written in JavaScript and it is developed by CKSource. CKEditor is available under open-source and commercial licenses.

Quill

Quill is a free open-source WYSIWYG editor.