I have used Xopus before pretty extensively and I wasn't very impressed (Actually one of the reasons we wrote our own from scratch). You might want to checkout these guys: http://www.fontoxml.com/

Although both of these are commercial products. 

I am currently working on the next version of our WYSIWYG (more appropriately WYSIOO) editor for our product easyDITA which runs on eXist (http://easydita.com). Having written one editor from scratch already, and starting on writing a second version from scratch, I can tell you it's a huge undertaking with lots of gotchas.

It's a possibility that we might release this next version in some way as a community edition which can be used for free for some types of institutions. If you want to chat about it more feel free to message me.

Cheers,

Casey


On Wed, Mar 5, 2014 at 3:24 PM, Dannes Wessels <dannes@exist-db.org> wrote:
You might want to check https://xopus.com 


On 5 Mar 2014, at 15:58 , Dulip Withanage <withanage@asia-europe.uni-heidelberg.de> wrote:

Is there anybody who has integrated  or planning to work on a wysiwig 
editor?
I am interested in  writing a wysiwig editor for  NLM JATS 
(http://dtd.nlm.nih.gov/publishing/)
Was thinking of not beginning from the scratch?


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Casey Jordan
easyDITA a product of Jorsek LLC
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