Herein described is a collection of traffic classifiers communicatively coupled to a classification aggregator. Traffic classifiers may use conventional techniques to classify network traffic by application name, and thereafter may construct mappings that are used to more efficiently classify future network traffic. Mappings may associate one or more characteristics of a communication flow with an application name. In a collaborative approach, these mappings are shared among the traffic classifiers by means of the classification aggregator so that one traffic classifier can leverage the intelligence (e.g., mappings) formulated by another traffic classifier.