Best Rule Engine Products in 2025

Drools introduces the Business Logic integration Platform which provides a unified and integrated platform for Rules, Workflow and Event Processing.

Key Drools features:

Declarative Programming Model Separation of Business Logic Flexibility and Adaptability Integration with Java

Open Source

Setuply: Transform Clients into Brand Advocates. An AI-powered, purpose-built platform for client onboarding and lifecycle management, helping B2B teams accelerate revenue recognition, boost retention, and scale operations with confidence.

Key Setuply features:

Project Management Case Management Secure Data Staging Client Impact Control Panel

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Business rule engine that lets you create and deploy business rules, while all your rules run in a secure and scalable cloud. Unlike other rule engines, you can create your first rule in 5 minutes and make 100k decisions in a minute via API.

Key DecisionRules.io features:

Easy Versioning DevOps Compatible Seamless Integration Secure & Scalable

freemium

Open-source business rules engine for automating decisions.

Key GoRules.io features:

User-Friendly Interface Integration Capabilities Scalability Real-time Processing

Open Source freemium

Mathematical optimization software.

Key OptaPlanner features:

Open Source Wide Range of Use Cases Java Integration Community and Support

Open Source

DotNet simple BRMS XML rule engine.

Key Simple Rule Engine features:

Ease of Use Fast Integration Cost-Effective

Business Rule Management System (BRMS).

Key NxBRE features:

Open Source Community Support Integration Capabilities Performance Optimization

Ruote is a workflow engine written in Ruby. Ruote is not a state machine library.

Key Ruote features:

Flexibility Open Source Ruby Integration Rich Features

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.

Key Higson.io features:

Structure Performance Publish changes without deployment Tester

paid Free Trial

Evrete is a lightweight, open-source Java Rule Engine that is compliant with Java Rule Engine Specification (JSR-94).

MiniZinc is a free and open-source constraint modeling language.

Key MiniZinc features:

Modeling Language Solver Agnostic Community and Support Rich Ecosystem

The Universal Process Orchestrator.

Key Camunda features:

Agentic Orchestration Process Orchestration Scalability Rich API's

Open Source freemium

ProcessMIX is a leading rules-driven, no-code process automation enterprise solution with a robust rules engine and built-in workflows for businesses.

Build powerful decision making API’s using spreadsheets.

Key Rulebricks features:

No-code Rule Builder Reactive Rule Flows Rule Versioning & Logging

freemium $49.99 / Monthly (5 Users)