I am not sure if this is the first time the CKEditor has been ported to the Eclipse platform but today I noticed on the Eclipse.org marketplace site there is a new plugin for editing HTML files using the CKEditor. I do know years ago we considered doing this for the Lotus Notes client. This also means if you bundle this feature with your RCP application you can also have the CKEditor!
What I really like about the way this plugin is bundled is it actually uses the CKEditor directory structure as is. Meaning, you can enhance the editor with its own plugins if you want. Sort of like a plugin within a plugin.
Great job to Konstantin Zaitcev for getting this done!