According to some embodiments, a logical set operator platform may recognize that a user has selected, via a graphical user interface, a sub-set of items from an item set associated with a source application. The logical set operator platform may then receive an indication from the user that a selected logical set operation is to be applied to the item set and to the selected sub-set of items, wherein the selected logical set operation is not implemented by the source application. The selected logical set operation may be applied to create a resulting item set based on the selected sub-set of items, and it then may be arranged for an indication of the resulting item set to be provided to a receiving application.