Decision Management System

= Open Source =



Rules-based Decision Modeling and Execution

OpenRules® is a general purpose Business Rule 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

* 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 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 6.2.5 is available

A new release 6.2.5 enhances OpenRules BDMS with new features such as: business rules for collections of objects; decision tables for ranking lists; advanced logging API;  improvements in OpenRules-based web applications; an ability to evaluate OpenRules without installation; fixed bugs and more
August 26, 2013

OpenRules on Cloud

Read the tutorial "Cloud Application Development" with examples of OpenRules web applications available on the cloud.


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


 CP 2013, Sep 16-20, Sweden


DecisionCAMP, Nov. 4-6, USA 

BBC 2013: Nov. 11-15, USA

Recent Events

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 Decision Management System (BDMS) that allows you to configure your own BDMS 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.

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
themed object
Business Rules - Time to Excel
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