DecisionRules is designed to be your rules engine, making your day-to-day analyses and procedures easier, running your business more efficiently and smoothly. DecicionRules allows you to know what customers are eligible for certain products, which prices to apply under certain circumstances, and much more. It is a powerful tool that can make 100k decisions in a a minute via API.
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Higson.io - Higson is a BRMS, that was created with very large decisions and hyper-performance in mind. It stands out with the concept of the business domain which organizes the whole configuration in easy to manage way.
CA Aion Business Rules Expert - CA Aion Business Rules Expert is a business decision and rule development tool that enables you to easily construct and maintain complex business processes in a visual environment.
Corticon - Progress Corticon Business Rules Engine helps organizations of all kinds make faster decisions by managing the rules that drive business processes.
GoRules.io - Open-source business rules engine for automating decisions