Nope, we have decided a long time ago that SSO is typically a feature that’s belong to enterprise world rather than something you would use in your family’s home server.
And indeed it proved to be one of the main trigger to push organisations to buy licenses and thus finance the further development of Pydio - including the FOSS part …
There is yet a cheap version of the license (the Connect Distribution) that mainly add this to Home Distrib.