TinyMCE - TinyMCE is a content editor that functions as a plug-in for Wordpress websites.
Adobe Dreamweaver - Adobe Dreamweaver is a proprietary web development tool developed by Adobe Systems.
Summernote - Summernote is a JavaScript library that helps users create WYSIWYG editors online.
VisualEditor - VisualEditor gives you the ability to edit without needing to learn wikitext markup, as is required by the default wikitext editor.
Telerik ASP.NET AJAX Editor - Telerik ASP.
Web AppBuilder for ArcGIS - Create custom widgets and themes for Web AppBuilder.