Free HTML editors

text editor, improved version of Vi

software development environment

Notepad++ (sometimes npp or NPP) is a text and source code editor for use with Microsoft Windows. It supports tabbed editing, which allows working with multiple open files in one window. The program's name comes from the C postfix increment operator.

NetBeans is an integrated development environment (IDE) for Java. NetBeans allows applications to be developed from a set of modular software components called modules. NetBeans runs on Windows, macOS, Linux and Solaris. In addition to Java development, it has extensions for other languages like PHP, C, C++, HTML5, and JavaScript. Applications based on NetBeans, including the NetBeans IDE, can be extended by third party developers.

SeaMonkey is a free and open-source Internet suite. It is the continuation of the former Mozilla Application Suite, based on the same source code, which itself grew out of Netscape Communicator and formed the base of Netscape 6 and Netscape 7.

WorldWideWeb (later renamed Nexus to avoid confusion between the software and the World Wide Web) is the first web browser and web page editor. It was discontinued in 1994. It was the first WYSIWYG HTML editor.

free and open-source text and source code editor

REDIRECT Mozilla Composer#Nvu

editor for Web development

text and HTML editor

SciTE or SCIntilla based Text Editor is a cross-platform text editor written by Neil Hodgson using the Scintilla editing component. It is licensed under a minimal version of the Historical Permission Notice and Disclaimer.

web browser and web editor

jEdit is a free software text editor available under GPL-2.0-or-later. It is written in Java and runs on any operating system with Java support, including BSD, Linux, macOS and Windows.

REDIRECT Mozilla Composer#KompoZer

VisualEditor (VE) is an online rich-text editor for MediaWiki-wikis that provides a way to edit pages based on the WYSIWYG (what you see is what you get) principle. It was developed by the Wikimedia Foundation in partnership with Fandom. In July 2013, it was enabled by default on several of the largest Wikipedia projects.

CKEditor (formerly known as FCKeditor) 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.

TinyMCE is an online rich-text editor released as open-source software under the GNU General Public License version 2 or later. TinyMCE uses a freemium business model that includes a free core editor and paid plans with advanced features. It converts HTML textarea fields, or other designated HTML elements, into editor instances.

BlueGriffon was a WYSIWYG content editor for the World Wide Web. It is based on the discontinued Nvu editor, which in turn is based on the Composer component of the Mozilla Application Suite, which was previously known as Netscape Composer, which was bundled with Netscape Gold before it was renamed to Netscape Communicator. Powered by Gecko, the rendering engine of Firefox, it can edit Web pages in conformance to Web Standards. It ran on Microsoft Windows, macOS and Linux.

software

Aptana, Inc. is a company that makes web application development tools for use with a variety of programming languages (such as JavaScript, Ruby, PHP, and Python). Aptana's main products include Aptana Studio, Aptana Cloud, and Aptana Jaxer.

HTML editor and web authoring module of the Mozilla Application Suite

Arachnophilia is a source code editor written in Java by Paul Lutus. It is the successor to another HTML editor, WebThing. The name Arachnophilia comes from the term meaning "love of spiders", a metaphor for the task of building on the World Wide Web.

open-source IDE