Free Self-Hosted Text Editors

Hurmet is a web-based rich text editor endowed with live calculations. With it, you can create documents that do calculations and preserve an easy-to-read record of your work.

HedgeDoc (fcommunity-driven fork of CodiMD) is an open-source collaborative markdown editor. With HedgeDoc you can easily collaborate on notes, graphs and even presentations in real-time. All you need to do is to share your note-link to your co-workers, and they’re ready to go.

TinyMCE is a platform independent web based Javascript HTML WYSIWYG editor control released as Open Source under LGPL by Moxiecode Systems AB. It has the ability to convert HTML TEXTAREA fields or other HTML elements to editor instances.

CKEditor 4 and CKEditor 5 are easy-to-implement open source JavaScript WYSIWYG rich text editors for any web browser. CKEditor Ecosystem has 2 very distinct rich text editors as well as image upload and collaboration solutions.

Quill is a free, open source WYSIWYG editor built for the modern web. With its modular architecture and expressive API, it is completely customizable to fulfill any need.

Codeit is a mobile code editor connected to Git. Runs on the web, open source and free. Supports HTML, CSS, JavaScript, Python, Bootstrap, XML and more. Easy to use without how to.

Collaborative document editing of Markdown files inside Nextcloud.

Litewrite was built out of a need to have a simple way of taking notes, having them everywhere, working on any device, regardless if on- or offline.

An open source collaborative code and text editor. Share documents and see changes occur in real-time. It uses Firebase for real-time data synchronization

Squire is an HTML5 rich text editor, which provides powerful cross-browser normalisation, whilst being supremely lightweight and flexible. It is built for the present and the future, and as such does not support truly ancient browsers.

Monod was a secure and offline-first, React-based Markdown editor. Development has STOPPED and the app has been taken down.

MediumEditor is a Medium.com WYSIWYG editor clone, a dead simple inline editor toolbar. Uses contenteditable API to implement a rich text solution.

Hive.js is a real-time collaboration platform that is modular, scalable, integratable and extensible. It's a Node.js-based server with an accompanying web app that works in your browser.

The simplest and smallest (~1kB) WYSIWYG text editor for web, with no dependencies 📝

ownCloud Documents is collaborative editing of rich-text documents that lets up to 5 individuals collaborate to edit .odt or .doc files securely within the browser.

A simple Markdown note-taking editor.

NyaoVim is a Neovim frontend built on Electron. The Neovim editor is composed as a Web Component and users can extend the UI with reusable Web Components, HTML, CSS and JavaScript.

ORY Editor is a React based editor for the web built that follows some important principles in modern web development.

React Rich Text Editor is a UI component built completely in React that is meant to be a full-featured textarea replacement. It's based on the excellent, open source Draft.js from Facebook which is performant and production-tested.