Please set the following property to false.
EnableStripIframeTags
Specifies whether to remove inject Iframe tags before writing the string into the db. When this property is set to true (the default) Cute Editor strips all iframe tags from the html to prevent iframe injection attack.
Demo:
asp.net Chat http://cutesoft.net/ASP.NET+Chat/default.aspx
Web Messenger: http://cutesoft.net/Web-Messenger/default.aspx
asp.net wysiwyg editor: http://cutesoft.net/ASP.NET+WYSIWYG+Editor/default.aspx
asp wysiwyg html editor: http://cutesoft.net/ASP
asp.net Image Gallery: http://cutesoft.net/ASP.NET+Image+Gallery/default.aspx
Live Support: http://cutesoft.net/live-support/default.aspx