WYMeditor is a web-based WYSIWYM (What You See Is What You Mean) XHTML editor (not WYSIWYG). WYMeditor has been created to generate perfectly structured XHTML strict code, to conform to the W3C XHTML specifications and to facilitate further processing by modern applications.
	Its features include:
 <ul>
 <li>XHTML strict + CSS compliant</li>
 <li>No font or text formatting, sizes or colors - WYMeditor is CSS-based</li>
 <li>Designed to be easy to integrate into your application</li>
 <li>No installation needed - this is 100% Javascript code - no plugin, no extension
 <li>Will remain as simple as possible</li>
 <li>We focus on well-tested code, stability and usability before adding new features</li>
 <li>Image, link, table support</li>
 <li>Skins support via CSS</li>
 <li>Internationalization</li>
 <li>APIs, plugins support
 </ul>

 Supported browsers:
 <ul>
 <li>Gecko-based browsers (Firefox 2.0+, SeaMonkey, Galeon, Epiphany, ...)</li>
 <li>Microsoft Internet Explorer 6, 7 and 8</li>
 <li>Opera 9.5+</li>
 <li>Safari 3.1+</li>
 <li>Google Chrome</li>
 </ul>

WYMeditor is a web-based WYSIWYM (What You See Is What You Mean) XHTML editor (not WYSIWYG). WYMeditor has been created to generate perfectly structured XHTML strict code, to conform to the W3C XHTML specifications and to facilitate further processing by modern applications.

Wymeditor - Web-based XHTML editor

slap is a Sublime-like terminal-based text editor that strives to make editing from the terminal easier. It has a Sublime-like file sidebar, Double-click to select word, highlight other occurrences, Syntax highlighting for 100+ languages, Autoindentation and lot more.

Slap - Sublime-like terminal-based text editor

Super simple WYSIWYG Editor. Summernote is a JavaScript library that helps you create WYSIWYG editors online. It saves images directly in the content of the field using base64 encoding, so you don't need to implement image handling at all. It also supports paste images from clipboard, Interactive WYSIWYG editing, Handy integration with server and lot more.

Summernote - Super simple WYSIWYG editor

A medium like rich text editor built upon draft-js with an emphasis on eliminating mouse usage by adding relevant keyboard shortcuts. Documentation in progress.

A medium like rich text editor built upon draft-js with an emphasis on eliminating mouse usage by adding relevant keyboard shortcuts. 

medium-draft - A medium like Rich Text Editor built on draft-js with a focus on keyboard shortcuts

Medium.com WYSIWYG editor clone. Uses contenteditable API to implement a rich text solution. MediumEditor has been written using vanilla JavaScript, no additional frameworks required.

Medium Editor - Medium.com WYSIWYG editor clone

The open source embeddable online markdown editor (component), based on CodeMirror & jQuery & Marked. It supports Standard Markdown / CommonMark and GFM (GitHub Flavored Markdown). It has full-featured support for Real-time Preview, Image Upload, Code blocks / Tables insert, Search replace, Themes, Multi-languages and lot more.
 
It also supports TeX (LaTeX expressions, Based on KaTeX), Flowchart and Sequence Diagram of Markdown extended syntax.

The open source embeddable online markdown editor (component), based on CodeMirror & jQuery & Marked. It supports Standard Markdown / CommonMark and GFM (GitHub Flavored Markdown). It has full-featured support for Real-time Preview, Image Upload, Code blocks / Tables insert, Search replace, Themes, Multi-languages and lot more.

Editor.md - The open source embeddable online markdown editor (component).

Handsontable Community Edition (CE) is an open source JavaScript/HTML5 UI Spreadsheet component for web apps. It easily integrates with any data source and comes with a variety of useful features like data binding, validation, sorting or powerful context menu. It is available for Vue, React, Angular and Polymer.

Handsontable - JavaScript/HTML5 UI Spreadsheet library for web apps. Available for React, Vue and Angular

Slate is a  completely customizable framework for building rich text editors. Slate lets you build rich, intuitive editors like those in Medium, Dropbox Paper or Google Docs—which are becoming table stakes for applications on the web—without your codebase getting mired in complexity. It can do this because all of its logic is implemented with a series of plugins, so you aren't ever constrained by what is or isn't in "core". You can think of it like a pluggable implementation of contenteditable built on top of React. It was inspired by libraries like Draft.js, Prosemirror and Quill.

Slate is a completely customizable framework for building rich text editors. Slate lets you build rich, intuitive editors like those in Medium, Dropbox Paper or Google Docs—which are becoming table stakes for applications on the web—without your codebase getting mired in complexity. It can do this because all of its logic is implemented with a series of plugins, so you aren't ever constrained by what is or isn't in "core". You can think of it like a pluggable implementation of contenteditable built on top of React. It was inspired by libraries like Draft.js, Prosemirror and Quill.

Slate - A completely customizable framework for building rich text editors

The Suneditor is a lightweight, flexible, customizable WYSIWYG text editor for your web applications. It has support to Embed images, Videos, Image resizing and rotation, Upload images to the server, Image gallery, Tables and lot more. It has support to use CodeMirror and KaTeX. 

SunEditor - Pure Javascript based WYSIWYG html editor, with no dependencies

A JS library for building WYSIWYG editors for HTML content. It is one of a collection of libraries designed for building tools that make it easier to edit HTML content. It is framework agnostic, The library doesn't use any JavaScript frameworks (no JQuery) but plays nicely with any of them. 

ContentTools - A beautiful & small content editor

Fontello is a tool to quickly pack vector images into webfonts. Consider it like Twitter Bootstrap, but for images. It builds everything necessary to include graphics into your web pages. Also, fontello has a big built-in collection of open source artworks.
 
With fontello you can:
<ol>
<li>shrink glyph collections, minimizing font size</li>
<li>merge symbols from several fonts into a single file</li>
<li>access large sets of professional-grade open source icons</li>
</ol>

Fontello is a tool to quickly pack vector images into webfonts. Consider it like Twitter Bootstrap, but for images. It builds everything necessary to include graphics into your web pages. Also, fontello has a big built-in collection of open source artworks.

fontello - Iconic fonts scissors

NicEdit is a Lightweight, Cross Platform, Inline Content Editor to allow easy editing of web site content on the fly in the browser. NicEdit Javascript integrates into any site in seconds to make any element/div editable or convert standard textareas to rich text editing.

NiceEdit - Lightweight, Cross Platform, Inline Content Editor

Squire is an HTML5 rich text editor, which provides powerful cross-browser normalisation, whilst being supremely lightweight and flexible. Squire was written as a component for writing documents (emails, essays, etc.), not doing wysiwyg websites.

Squire - HTML5 rich text editor

ProseMirror is a well-behaved rich semantic content editor based on contentEditable, with support for collaborative editing and custom document schemas. Rich content editors should, ideally, produce clean, semantically meaningful documents while still being easy for users to understand. ProseMirror tries to bridge the gap between editing explicit, unambiguous content like Markdown or XML, and classical WYSIWYG editors.
 
ProseMirror has built-in, ground-up, rock solid support for collaborative editing, where multiple people work on the same document in real time. It is modular architecture makes sure you only load the code you need, and can replace parts of the system as needed.

ProseMirror is a well-behaved rich semantic content editor based on contentEditable, with support for collaborative editing and custom document schemas. Rich content editors should, ideally, produce clean, semantically meaningful documents while still being easy for users to understand. ProseMirror tries to bridge the gap between editing explicit, unambiguous content like Markdown or XML, and classical WYSIWYG editors.



ProseMirror- A toolkit for building rich-text editors on the web

CodeMirror is a JavaScript library that can be used to create a relatively pleasant editor interface for code-like content. It could be easily integrated in to your webpage. It supports JavaScript, XML/HTML, CSS, Python, PHP, diff, C, Java, sTeX, LaTeX, Haskell, Smalltalk, reStructuredText and PL/SQL. It also supports features like Autocompletion, Search/replace, Highlighting the current line.
 <img src="/AppImages/Article/code-mirror-img1.jpg" alt="" class="float-center">

CodeMirror is a JavaScript library that can be used to create a relatively pleasant editor interface for code-like content. It could be easily integrated in to your webpage. It supports JavaScript, XML/HTML, CSS, Python, PHP, diff, C, Java, sTeX, LaTeX, Haskell, Smalltalk, reStructuredText and PL/SQL. It also supports features like Autocompletion, Search/replace, Highlighting the current line.

CodeMirror - In-browser code editing

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