Eclipse SUMO is a free and open source traffic simulation suite, highly portable, microscopic and continuous traffic simulation package designed to handle large networks.

It allows modelling of intermodal traffic systems - including road vehicles, public transport and pedestrians. Included with SUMO is a wealth of supporting tools that automate core tasks for the creation, the execution and evaluation of traffic simulations, such as network import, route calculations, visualization and emission calculation. SUMO can be enhanced with custom models and provides various APIs to remotely control the simulation

Licensed under the EPLv2 (Eclipse Public License V2)