OpenLink Data Spaces (ODS)  is another item for the list of open source platforms aimed at unhosted (de-centralized) “points of web presence”, also known as data spaces.
Note, WebDAV is integral to ODS, which is basically a platform developed using OpenLink Virtuoso . Thus, you are able to perform tasks such as:
- Use WebID ACLs to protect resources and collections.
- Associate collections (folders) with Virtuoso back-end Quad Store so they act as a simple import mechanism.
- Associate the folders above with Sponger Cartridges, which means Linked Data transformation of non-RDF resources precedes final persistence in the Quad Store.
- Associate virtual resources with DAV collections, e.g., results of SPARQL queries.
Here’s how I put the above into use re. G+.
- Go to Google Takeout to get a dump archive (ZIP).
- Mount Virtuoso or ODS Briefcase DAV folder to my desktop, phone, or tablet.
- Extract the ZIP archive.
- Drag the entire expanded directory tree to my mounted folder.
- I have Linked Data in my target Virtuoso instance at this point; thus all the data is accessible by a plethora of Linked Data or basic HTML browsers.
I have made a public demo since I want step 3 to be optional — i.e., I should just drag and drop a ZIP or GZIP archive to the special DAV folder, leaving Virtuoso to handle the rest of the effort to import to the Quad Store