Abstract: A method includes providing, by a server computer, a shared workspace for facilitating collaborative work by a plurality of users with respect to a plurality of shared-access objects; obtaining real-time activity information describing ongoing actions currently being performed with respect to one or more of the shared-access objects; determining, based at least in part on the real-time activity information, whether a real-time notification rule is satisfied; outputting, for display in an activity stream and in response to determining that the real-time notification rule is satisfied, a real-time notification; and removing, from display in the activity stream, the real-time notification upon determining that the real-time notification rule is no longer satisfied.

Abstract: A method includes receiving, at one or more server computers, an activity information request regarding an object; determining whether a user associated with the activity information request is currently authorized to access the object or was previously authorized to access the object; if the user is currently authorized to access the object, permitting unrestricted access to a plurality of activity information items describing actions associated with the object; and if the user was previously authorized to access the object, permitting access to a filtered set of activity information items based on the plurality of activity information items.