As the simple richtext (wysiwyg) editor used in Firesite CMS is getting better work have started to separate it from Firesite. It still needs more work before a release 1.0 but most of the features are there.
The aim is to create an extremely simple editor that is robust and very easy to integrate into web application forms. Use it when you have a need for richtext fields but do not require a full webpage creation package.
Check it out here: http://www.dotvoid.com/wysiwyg/richtext.html