Edtr.io

Intuitive WYSIWYG web editor, open source & fully adaptable.

AxMath

WYSIWYG equation editor for Word and LaTeX.

Simple and flexible HTML, CSS, and JS for popular UI components and interactions

Real-time collaborative future-ready rich text editor

Another Medium WYSIWYG editor

Create HTML snippets with a simple WYSIWYG editor

MediumEditor is a simple inline editor toolbar built with JavaScript.

Simplest & smallest WYSIWYG text editor, w/ no dependencies

Stripo is an online drag-n-drop and HTML email editor to design responsive email templates fast without any HTML skills.

Markdown WYSIWYG editor

Visual studio for web is now open for everyone