Statista - The Statistics Portal for Market Data, Market Research and Market Studies

Spry Simulation - Microsoft Excel add-in which enables system dynamics, discrete-event and Monte Carlo simulation in modern spreadsheets, especially with small to medium-sized simulation models and for a proof-of-concept tasks.

Montecarlito - MonteCarlito is a free Excel-add-in to do Monte-Carlo-simulations.

AnyLogic - AnyLogic has changed simulation modeling and expanded its application into complex business environments. The unmatched flexibility of multimethod modeling allows users to capture the complexity of virtually any system, at any level of detail.

IBM ILOG CPLEX Optimization Studio - IBM ILOG CPLEX Optimization Studio is an easy-to-use, affordable data analytics solution for businesses of all sizes who want to optimize their operations.

Netron - Open-source visualizer for neural network, deep learning and machine learning models.