Simulation of Urban MObility (SUMO) - "Simulation of Urban MObility" (SUMO) is an open source, highly portable, microscopic and continuous road traffic simulation package designed to handle large road networks. SUMO is licensed under the Eclipse Public License V2.
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
PTV Visum - PTV Visum is used to model transport networks and travel demand, to analyse expected traffic flows...
GNU Octave - GNU Octave is a programming language for scientific computing.
TransCAD - TransCAD combines GIS and transportation modeling capabilities in a single integrated platform, providing capabilities that are unmatched by any other package.
Wolfram Mathematica - Mathematica has characterized the cutting edge in specialized processing—and gave the chief calculation environment to a large number of pioneers, instructors, understudies, and others around the globe.