Suites are about combining multiple tools in one package.
A Suite is a package of multiple analytic tools, for example a Solver plus a Monte Carlo Simulation tool. Suites usually have some level of integration among the tools. A product in the “Suite” category will also appear in the corresponding tool categories above.
Risk Solver Family of Products by Frontline Systems
Risk Solver is the easiest, fastest, and most powerful tool you can buy for risk analysis of your Excel models, using Monte Carlo simulation.”
Risk Solver Premium deeply integrates Risk Solver and Premium Solver -- giving you complete optimization capabilities, upward compatible from the Microsoft Excel Solver.  Risk Solver Platform, a powerful superset of Risk Solver Premium, deeply integrates Risk Solver and Premium Solver Platform -- and uses PSI Technology to automatically diagnose your model, automatically determine which solution methods can be applied, automatically select transformations for non-smooth models and stochastic linear programming models, and automatically choose the best Solver engine to solve the model.”
DecisionTools Suite by Palisade Corporation
“The complete risk and decision analysis toolkit, including @RISK, PrecisionTree, TopRank, NeuralTools, StatTools, Evolver, and RISKOptimizer”.
Crystal Ball by Oracle
“Oracle Crystal Ball solutions begin with Oracle Crystal Ball, the base package for Monte Carlo simulation. … Oracle Crystal Ball can be enhanced with Oracle Crystal Ball Decision Optimizer that adds the advanced capabilities of optimization and calculation speed.”
Crystal Ball software is a leading spreadsheet-based software suite for predictive modeling, forecasting, Monte Carlo simulation and optimization. With over 4,000 customers worldwide, including 85% of the Fortune 500, Crystal Ball is used by customers from a broad range of industries, such as aerospace, financial services, manufacturing, oil and gas, pharmaceutical and utilities. Crystal Ball is used in over 800 universities and schools worldwide for teaching risk analysis concepts.”
Editor’s Note: Crystal Ball was a leading spreadsheet analytics company. It was acquired by Oracle in 2009. It is excessively difficult to find in the Oracle   website useful information regarding Crystal Ball’s excellent products.
Risk Simulator by Real Options Valuation
RISK SIMULATOR is a powerful Excel add-in software used for applying simulation, forecasting, statistical analysis, and optimization in your existing Excel spreadsheet models. The software was developed specifically to be extremely easy to use. For instance, running a risk simulation is as simple as 1-2-3, set an input, set an output, and run. Performing forecasting can be as simple as two or three mouse clicks away and the software does everything for you automatically, complete with detailed reports, powerful charts and numerical results. It even comes in English, Spanish, Chinese and Japanese, with additional languages on their way.”
Lumenaut by Lumenaut
“The Lumenaut Excel software add-in features a Monte Carlo simulation software package, a Decision Tree analysis software package and a Parametric and Non-Parametric Statistics software package, providing a power packed set of tools for your business, engineering, industrial or scientific analysis right in Excel.”
Decision ToolKit by TreePlan 
Decision ToolKit is the bundle of all three add-ins: TreePlan, SensIt, and RiskSim.” There is also the free Better Histogram add-in.