1. A professional visual editor for Bootstrap 4 and 3, Foundation, responsive design, HTML, and CSS. Convert HTML to WordPress themes.

  2. Opera Dragonfly is a cross device, cross platform debugging environment for the Opera browser-debug JavaScript, inspect and edit CSS and the DOM, and view any errors on your mobile or computer.

  3. TinyMCE is a content editor that functions as a plug-in for Wordpress websites.

  4. NetObjects Fusion is a web design tool, developed and distributed by NetObjects, Inc.

  5. Open source application that started off as Mozilla Composer.

  6. Mercury Editor comes as a Rails Engine, but if you'd like to use Mercury outside of a typical Rails application, you can download these packages and use them.