Business Rules and Decision Management System

= Open Source =




OpenRules® is a general purpose Business Rules and Decision Management System available as an Open Source product. It allows subject matter experts and software developers to create, test, execute, and maintain enterprise-class decision support applications.


What Business Analysts Can Do:

demo* Define Complex Business Decisions
* Represent Decision Tables

* Define Business Glossaries

* Create and Execute Test Cases

* Efficiently Execute Business Decisions

Tools: MS Excel®, OpenOffice® or Google Docs®

Key Differentiators:

* Executable Decision Models

* There is no rule language to learn

* No coding of rules is required

* Business analysts control business logic

* Solving business optimization problems

See also Decision modeling methodology, Rule Solver

What OpenRules Can Do:

demo* Rules-based development

* Simple Java or .NET integration

* Rules-based web applications

* Predictive analytics

* Constraint solving, optimization

See Examples, User Manual


OpenRules 6.3.4 is available

The Release 6.3.4 introduces a new add-on "What-If Analyzer" that supports real-time what-if analysis of decision models by activating/deactivating business rules. A user may see right away the changes in the decision outcomes and find multiple or optimal solutions.

December 28, 2015

Support for DMN Standard

OpenRules® supports the OMG standard "Decision Model and Notation" providing several implementation projects such as DMN Primer, Mortgage Recommender, and UServ


Forrester Research, Inc.

"OpenRules have the most-aggressive approaches to business-expert authoring and typically requires less developer support than IBM ILOG, FICO Blaze Advisor, and JBoss BRMS.

Market Overview: Business Rules Platforms



Upcoming Events


RuleML 2016 , The 10th International Web Rule Symposium July 6-9 2016, New York

CP 2016: International Conference on Principles and Practice of Constraint Programming Sep 5-9, 2016, Toulouse, France

BBC 2016, Nov. 1-4, 2016, Las Vegas, USA

Recent Events

BBC 2015: Nov. 2-6, USA

Video "DecisionsFirst Modeler Integration with OpenRules"

Webinar "Creating and Managing Executable Decision Models"




Major Functional Components

Rule Repository

Rule Repository

Enterprise-class Repository Maintained by Business Analysts with Excel® or Google Docs®

     Rule Engine

Rule Engine

Executing Decisions with Inter-Related Decision Tables

Rule Learner

Rule Learner

Discovering Rules
Predictive Analytics

   Rule Solver

Rule Solver

Constraint Satisfaction
Solving Optimization Problems

Rule Dialog

Rule Dialog

Developing dynamic rules-based Web Questionnaires


Finite State Machines

Event Processing
Connecting the Dots

(click on any button to learn more about the component)

OpenRules, Inc. offers a general purpose Business Rules and Decision Management System (BRDMS) that allows you to configure your own decision management system using the above components and commonly used software.  OpenRules® comes with a methodology and proven open source tools that enable business analysts to create an enterprise-level Business Rules Repository. Such a repository may be used across an enterprise as a foundation for various decision services with complex business logic.

OpenRules® customers create and maintain their rule repositories using familiar  graphical interfaces provided by MS Excel® or OpenOffice®. Being integrated with Google Docs®, OpenRules® supports collaborative rules management.  The use of standard tools gives customers easy access to very powerful features including editing, searching, and integration capabilities.

OpenRules® projects may be deployed as regular Java programs, as web services, or on cloud. They can be naturally integrated into existing software infrastructures based on Java or .NET.  A very detailed documentation and multiple examples are provided. 

OpenRules® makes rules-based systems not only less expensive, but more importantly, easier to develop, and manage, and more sustainable. From multi-billion corporations to children's hospitals and innovative start-ups, OpenRules customers capitalize on their familiarity with popular tools such as MS Excel, Google Docs, and Eclipse IDE to effectively minimize their learning curve.


You may evaluate OpenRules for free by analyzing and executing predefined or your own decision models without any downloads - visit OpenRules Sandbox. A complete version is available for downloads from here.


OpenRules, Inc. helps its customers to meet the increasing demand for very complex rule bases and high-transaction volumes, with simpler, more cost-effective solutions. OpenRules, Inc. stands behind all provided Open Source tools with premium Technical Support and related Consulting and Training Services.

Award Eclipse                   JSR 331 


Business Rules Repository Decisions Top-Down Semantics In Concert Business Analyst Decisioning
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Business Rules - Time to Excel                                                                                                                                         
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