CMIS (Content Management Integration Service) is aiming to be the new webDAV. Is there a possibility to either mount a CMIS source in Linux or integrate it into Nautilus?
There is no convenient such tool right now, so I started developing CmisSync.
It will keep a local folder synchronized with your files in the CMIS repository. It allows you to browse your CMIS documents offline. It is not finished yet. Open Source.
UPDATE: CmisSync is now ready for production use.
If you don't need offline access, you might want to try Adobe Drive, which features a CMIS connector. They say it only allows "basic access". I haven't tried it yet because it is not available for Linux. Proprietary.