Montecarlito - MonteCarlito is a free Excel-add-in to do Monte-Carlo-simulations.
productboard - Beautiful and powerful product management.
Statista - The Statistics Portal for Market Data, Market Research and Market Studies
ProdPad - ProdPad helps your team gather ideas, surface the best ones and turn them into product specs, and then put it all on a product roadmap.
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.
ProductPlan - Cloud-based product roadmap software solution