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I'm looking for an open source GIS that supports viewing and editing of CityGML models.

So far, I've found a list of open source applications that support CityGML, but they all seem to be stand-alone applications:

I would also be interested in your experience with CityGML in a GIS (also commercial) context.

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I asked a question about this a little while ago - it wasn't specific to opensource tools though.… – djq Aug 15 '11 at 13:48
What exactly do you mean by "stand-alone applications"? Do you mean you want something that is part of a larger suite of applications? Or do you mean something that is both viewer and editor? – Mark Ireland Aug 15 '11 at 20:27
It should be more than just a viewer/editor. What I'd love to see is a GIS - with all the usual functionality - that can handle CityGML. – underdark Aug 15 '11 at 20:47
You can view cityGML with gvSIG 3D, see… but I haven't tested to see if you can edit them so I didn't post as a possible answer. The video shows scaling and repositioning of the 3d object; I don't know where the edits are stored: in the view as part of the layer symbology, or hard coded edits into the citygml file? – SaultDon Sep 21 '11 at 18:02

deegree3D (part of a broader FOSS geospatial project, deegree) looks like it might work for you. Probably depends a lot on what features you need. Unfortunately I haven't tried it, so I can't comment on its use or reliability.

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