I want to build a custom CMS where users a Rich text editor is the main way to create content rather than wiki markup.
Besides stability and performance, I want the RTE to be easily extensible. The latter point is very important because I intend to extend it to my needs.
For example I want the users to be able to embed OpenSocial gadgets and whiteboard (based on canvas) into the page. I also the want the users to embed media source like (youtube, slideshare etc).
My preliminary investigation shows that Dojo's (dijit) RTE and TinyMCE are pretty good. How would you compare the two in terms of stability, performance and extensibility. Any other RTE's I should be looking at that fit the bill?
PS: I am using dojo as the main js library.