Javascript 1C Simple WYSIWYG editor - simple js WYSIWYG editor. I used iframe technology - HTML 4.0 and HTML 5.0. Needed javascript 1.2 standart and support browser design mode. It's free. Editor working not only browser. Editor work in 1C HTML Document, begin 8.0 version platfrom - all client.
Good luck, autor Prikhodko Dmitry Igorevich