CLEditor is an open source jQuery plugin which allow you to easily add lightweight, full featured, cross browser, extensible, WYSIWYG HTML editor to any web site.
It’s an lightweight jQuery plugin that consumes less than 9Kb of total bandwidth when minified and gzipped and also a tested with following browsers on both the mac and pc: IE 6.0+, FF 1.5+, Safari 4+, Chrome 5+ and Opera 10+. All testing is done using jQuery 1.4.2. it provide all standard text formatting features found in other WYSIWYG editors and also contains rich drop downs for font name, size, style, text color and highlight color. it allow you to insert images, hyperlinks and horizontal rules.
it has rich plugin development environment, where developer can customize the user interface like adding/removing/updating controls, enable/disable the use of CSS and much more.