ZTinyMCE
TinyMCE is probably the best Open Source WYSIWYG editor out there. This Zope2 product makes it easy to use TinyMCE in your Zope stuff. You create a ZTinyMCE instance in the root of your Zope then depending on how you want to use it in different places you create ZTinyMCE Configuration objects. It's pretty easy.
The product is going to be hosted and maintained on www.fry-it.com/oss/ZTinyMCE hosted by Fry-IT ltd.