Best open source tile map editor (Vector based for actionscript)

I am looking for an online tile map editor. After much searching, I settled on Tiled (http://www.mapeditor.org/), but it is a standalone solution. I'm looking for an editor, for example http://www.youtube.com/watch?v=v3Nq9I7CPPU ( Dofus ?), And this demo looks amazing http://www.youtube.com/watch?v=wk5QYPtDQ4U&feature=related

Looking for Dofus pointed me to a game. I just need an editor that can export to a predefined XML / JSON schema, and I should be able to load it in my ActionScript game.

Please indicate to me the necessary resources for the implementation of something like Dofus (Virtual World).

Example: http://www.computerarts.co.uk/tutorials/create-3d-custom-map-illustrator