JQuery HtmlBox is a modern, crossbrowser, interactive, opensource wysiwyg
editor built on top of the excellent JQuery library. It is tested
with the most widely deployed browsers Mozilla Firefox, SeaMonkey,
Microsoft Internet Explorer, Opera, Apple Safari and Google Chrome.
Besides the most popular browsers it has been tested and is working
with some others like: Kazehakase, Epiphany, and Galeon. The variety
of features, and the advanced configuration capabilities, combined
with the easy and intuitive setup make HtmlBox as the preferred
choice, when interactive user input is required such as in content
management systems, forums, guest books, contact forms and others.
Find more at: http://remiya.com/htmlbox/