We currently do that with http://filepicker.io/ http://filepicker.io/ across multiple cloud providers (only Dropbox and Facebook for now though) We currently o

We currently do that with http://filepicker.io/ http://filepicker.io/ across multiple cloud providers (only Dropbox and Facebook for now though) We currently only support opening and saving back files but we plan to add save-as support in the next few days