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Statista - The Statistics Portal for Market Data, Market Research and Market Studies
IDC - The premier global market intelligence firm.
Montecarlito - MonteCarlito is a free Excel-add-in to do Monte-Carlo-simulations.
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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.