As far as I can see it doesn't offer anything that isn't already covered by OwnCloud. Owncloud also offers integration with many other web apps featuring calendaring, ldap, email, etc.. The only license info I can find states "All rights reserved".. I don't have a windows pc to install it on but I assume it has a click through license agreement.. I would have to read that carefully for any "you grant us remote access to your self hosted files" or similar crazyness.

Owncloud is released under the AGPL v3.. my only real gripe with owncloud is the fairly shoddy android app!