We are trying to revive and modernise a once popular open source editor xing/wysihtml5. It is configurable to be used with and without an iframe. The editable area API is separated from the toolbar so it would be easy to customise or completely rebuild the toolbar logic for your own app.
I glanced through the parser rules, and it looks like you guys have implemented some kind of named filters in addition to the per-tag-per-attribute rule set from wysihtml5.
Having just spent too much time fighting wysihtml5's overly opinionated rules trying to allow <a> tags to allow any value for href, changes in this area are of great interest to me.
Could you touch on what changed in the parser rules?
The Voog team