I know this has been labelled out-of-scope for 3.X, but I would like to second the request, perhaps for consideration in the future.
I have a personal license for Chevereto, and I'm considering recommending that my company purchase a license. We need a collaborative photo asset management solution that we can host on our own hardware and make available on our intranet, and I'm evaluating Chevereto to serve that purpose. We use Microsoft Active Directory to manage our network, and allowing our users single-sign-on access with their network credentials would be ideal.
Thanks very much for your consideration!
-- Joey