IBM Domino Utility Server V9.0.1 adds IBM Notes Browser Plug-in

With the purchase of an IBM Domino Utility Server License you also are allowed to publish the Notes Browser Plugin at no extra charge.

So you´re allowed to host applications for an unspecified number of users ( which also can authenticate against the Domino Directory ) using the Notes Browser Plugin.

Official statement from IBM can be found here >> Announcement Letter