Simile is described as 'Multi-paradigm modelling and simulation software for complex dynamic'. There are more than 10 alternatives to Simile for Windows, Linux, Mac and Docker. The best alternative is Anylogic. It's not free, so if you're looking for a free alternative, you could try MATSim or Simulation of Urban MObility (SUMO). Other great apps like Simile are FlexSim (Paid), Simio (Paid), SIMUL8 (Paid) and HCS (Paid).
AnyLogic is a cross-platform multimethod simulation modeling tool developed by The AnyLogic Company (former XJ Technologies). It supports agent-based, discrete event, and system dynamics simulation methodologies.
"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.
This release of the Highway Capacity Software (HCS7) includes updated modules to implement the Highway Capacity Manual 6th Edition (HCM6) procedures for Signalized Intersections, Urban Streets, Alternative Intersections, Roundabouts, Freeway Facilities, Basic Freeway Segments...
JaamSim is a java-based free and open source discrete-event simulation software which runs on Windows, Linux, and Mac OSX and includes a drag-and-drop user interface, interactive 3D graphics, input and output processing, and model development tools and editors
TSIS is an integrated development environment that enables users to conduct traffic operations analysis. Built using a component architecture, TSIS is a toolbox that contains tools that allow the user to define and manage traffic analysis projects.