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Drools vs RuleBook by Rule4
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Business Rules Engines
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Free
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Business Rules Engines
Overview
Focus
Business Rules Engines
Healthcare Compliance
Product
Open-source business rules management system with decision tables, scorecards, and complex event processing engine.
Decision automation platform for healthcare compliance with business rules for prior authorization and claims processing.
Headquarters
Open Source
Charleston, South Carolina
Company size
2-10 employees
11-50 employees
Founded
2001
2016
Pricing details
Published rate
Free
Free options
Free plan
Source updated
Oct 29, 2026
Oct 29, 2026