News and Release History



OpenRules 6.4.2 Expands Decision Modeling Capabilities

The Release 6.4.2 introduces new types of decision tables: DecisionTableAssign, DecisionTableIterate, DecisionTableSort

May 20, 2017

Book "DMN in Action"This practical guide is available from Amazon. Supporting software:

Feb 16, 2017

OpenRules 6.4.1 introduces WHY-Analyzer for Decision Modeling

The Release 6.4.1 introduces a graphical WHY-Analyzer that allows business users to analyze behavior of their DMN-based decision models

Dec 20, 2016

OpenRules Wins 10th International Rule Challenge

OpenRules®  "What-If Analyzer for Decision Modeling" won 10th International Rule Challenge Award at RuleML-2016.

July 8, 2016


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


DecisionCAMP-2017 July 13-14, 2017, London, UK

BBC-2017 Nov. 6-10, 2017, Orlando, FL, USA

Recent Events

RuleML 2016 and DecisionCAMP-2016, July 6-9 2016, New York

BBC 2015: Nov. 2-6, USA

Video "DecisionsFirst Modeler Integration with OpenRules"

Webinar "Creating and Managing Executable Decision Models"





(latest news shown first)

bullet OpenRules® Release 6.4.2 adds new decision modeling capabilities including: "DecisionTableAssign" to  simplify multiple assignments; "DecisionTableIterate" to simplify iteration over arrays of business objects; "DecisionTableSort" to support array sorting.
May 20, 2017

A new book "DMN in Action with OpenRules" has been published. This is a practical guide for development of Business Rules and Decision Management Applications using DMN and OpenRules. Click on the book cover on the left to order the book from Amazon for just $9.95. Read more at

Feb 16, 2017


OpenRules® Release 6.4.1 introduces "Why-Analyzer", a new graphical interface that allows business analysts to analyze the results produced by their DMN-based decision models.The workspace "openrules.dmn" includes many examples completely oriented to business users without a need for any additional tool but Excel. Release 6.4.1 comes with enhanced Eclipse Plugin that supports latest Eclipse releases. It also adds support for Long variables for very large integers. See a brief video
Dec 20, 2016


OpenRules® successfully exhibited and presented at BBC-2016 in Las Vegas. See OpenRules® presentation "WHY" and "WHAT-IF" Buttons for Business Decision Management
Nov 1-4, 2016


The Release 6.4.0 supports major expressions defined by DMN FEEL 1.1 and is capable to extract all decision tables from a DMN XML file and generate the proper OpenRules decision tables in Excel.  See details at Release 6.4.0 Notes.
July 20, 2016


OpenRules® "What-If Analyzer" wins 10th International Rule Challenge Award at RuleML-2016.
July 8, 2016


OpenRules® Release 6.3.4 introduces a new add-on called "What-If Analyzer" that supports real-time what-if analysis of decision models by activating/deactivating business rules. A user may immediately see the changes in the affected decision variables and decision outcomes. It allows a user to find multiple and optimal solutions. It also adds support for BigDecimals.
Dec 20, 2015


OpenRules was an exhibitor and a presenter at BBC-2015. You may see our presentation "Good Old UServ Product Derby in the Brave New World of Decision Management" and the proper demonstration. See a photo from the "DMN at BBC" meeting
Nov 2-6, 2015


A new Release 6.3.3 allows a user to generate Java interfaces for decision models that already were created and tested using only Excel files. It also adds new features to OpenRules® Dialog and deprecates the global method dialog(). We also added new standard operators and fixed several bugs.
May 15, 2015


OpenRules® Release 6.3.2 adds enhanced features to OpenRules Dialog for generation of highly dynamic questionnaires and new decisioning and problem solving capabilities requested by customers. The Release 6.3.2 comes with many new sample projects that demonstrate the practical use of OpenRules® BRDMS.
December 5, 2014


OpenRules will be a sponsor and a presenter at the major international Decision Management events DecisionCAMP-2014 and BBC-2014. Read more
Oct-Nov, 2014


Release 6.3.1 enhances OpenRules® testing facilities with automatic comparison of expected and actual decision execution results, handling Excel files in the XLSX format wit the latest Apache POI, additional macros and other features requested by customers.
May 18, 2014


OpenRules® Sandbox has been enhanced and made more user-friendly. You may select and execute standard decision models or upload and execute your own models defined completely in Excel. Try it from this URL.
April 25, 2014


James Taylor, CEO at DecisionMgtSolutions, presented a bureau strategy decision model from the DMN Primer at "bpmNext" using
- Signavio for business process diagramming
- DecisionFirst Modeler for high-level decision modeling
OpenRules for rules representation and execution.
The demonstration is available from here. See the complete implementation in Excel and execute the proper decision model directly from the OpenRules Sandbox.
March 2
7, 2014


OpenRules® Release 6.3.0 essentially simplifies OpenRules expression language  by introducing macros, enhancing the standard decision templates, and making all decisioning constructs thread-safe.
February 10, 2014


OpenRules® Release 6.2.6 advances OpenRules BDMS with the following features:

* Invocation of Sub-Decisions and Decision Tables by Name

* Initial DMN Implementation

* Generating Excel Workbooks with OpenRules Decision Tables.

December 10, 2013


bullet OMG made the Decision Model and Notation (DMN) Specification 1.0 publicly available on Sep 26, 2013. Today OpenRules® published the first implementation of the DMN 1.0 Primer based on the Loan Origination example described in the Section 10 of the Specification. You may read its description here, analyze it for free and without any downloads from here, or download the DMN 1.0 Primer project from here and do your own experiments by changing Excel-based decisions, executing the decision model, and analyzing the results.
October 13, 2013
bullet Release 6.2.5 enhances OpenRules® BDMS with the following functionality: business rules defined on collections of objects; decision tables for comparing ranking lists; new features in OpenRules-based web applications; advanced logging API; fixed bugs, and more - see Release Notes
August 26, 2013
bullet OpenRules® Release 6.2.4 advances OpenRules BDMS with additional features initiated by the real-world use of previous releases: http authentication, extended date formats, use of decision variables with "not applicable" values, enhanced access to XML data, and more sophisticated execution reports. Read Release Notes
May 9, 2013
bullet Webinar with James Taylor: Creating and Managing Executable Decision Models with DecisionFirst Modeler and OpenRules®
May 7, 2013
bullet OpenRules® Release 6.2.3 adds new features such as generation of decision execution reports in the HTML format, an ability to create more compact decision tables with new templates, advanced interfaces for external rules, and more. Read Release Notes
January 9, 2013
bullet We added a tutorial "Cloud Application Development" and a new project workspace "" with examples of OpenRules® web applications deployed on the cloud. It is available as a part of the complete OpenRules installation.
October 15, 2012
bullet OpenRules® Release 6.2.2 adds new features that allow a user to customize decisions and decision runs, to create custom decision tables, and to incorporate decisions in web dialogs. Read Release Notes
September 24, 2012
bullet OpenRules, Inc. successfully completed two contracts with IRS related to the integrated use of machine learning and business rules technologies. See what IRS management says in the final report
Sep 12, 2012

bullet Over the course of the last few years, OpenRules® is constantly gaining in popularity adding more and more customers including large international corporations and government agencies, new partners and resellers worldwide. See the actual statistics from 2004 to 2012 in our blog.
1, 2012
bullet OpenRules® Release 6.2.1 adds new functionality for Database Integration, Web Services, more decision tables operators, an optimization mode for Rule Solver, enhanced documentation. See Release Notes.
June 3, 2012
bullet OpenRules, Inc. is selected to present at the World Congress on Decision Tables that is a part of the BBC 2012. As usual, OpenRules, Inc. will be a sponsor of this largest BR event.
bullet OpenRules® Release 6.2.0 adds a new inferential rule engine: an enhanced Rule Solver provides powerful constraint-based tools for decision management. OpenRules® 6.2.0 also advances the existing decision models and web dialogs.  See Release Notes.
March 5, 2012
bullet JCP Executive Committee approved the final release of the standard JSR-331 "Constraint Programming API". OpenRules CTO Dr. Feldman is the Specification Lead for this standard. Read more.
February 28, 2012
bullet OpenRules® Release 6.1.3 enhances OpenRules® Executable Decisions with new functionality required by real-world applications. Read more
December 20, 2011
bullet OpenRules® Release 6.1.2 is a minor release that extends the Decisioning functionality and fixes several bugs found in the latest releases. Read more
September 11, 2011
bullet OpenRules® Release 6.1.1 advances the Executable Decisions by providing new features, the detailed user manual and new tutorials, and fixing some bugs.  Read more
August 8, 2011
bullet Forrester Research: "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 2011
July 5
, 2011
bullet James Taylor published articles devoted to OpenRules® BRMS:
- General Overview
- Rule Solver
- Rule Learner.
May 12
, 2011
bullet OpenRules® Release 6.0.1 is a major milestone that supports Executable Decisions created and tested by business analysts without coding and IT involvement. Read more
March 4, 2011
bullet OpenRules® Release 5.4.1 introduces a new version of Rule Solver that allows a user to define and solve constraint satisfaction and optimization problems.
October 26, 2010
bullet OpenRules® and General Intelletics presented "Developing Large Scale Intelligent Checklists with OpenRules BRMS" at The Business Rules Forum, Washington DC. 
October 17-21, 2010
bullet KPI and OpenRules® ran a successful boot camp at the RulesFest in San Jose.
October 14, 2010
bullet OpenRules® presented a new experimental framework "Connecting the Dots" at the RulesFest-2010.
October 13, 2010
bullet Java Community Process (JCP) announced today at JavaOne Conference in San Francisco that JSR-331 "Constraint Programming API" won JCP Award "The Most Innovative JSR of 2010". OpenRules CTO Jacob Feldman is the Specification Lead of this JSR. A newly redesigned Rule Solver will be based on the JSR-331.
September 22, 2010
bullet Knowledge Partners International, LLC and OpenRules, Inc. announced that they will jointly present a live primer of The Decision Model at the RulesFest in October 2010. See press release.
July 29, 2010
bullet OpenRules, Inc. successfully completed the IRS contract "Machine Learning Models Research and Development with NRP and LMSB Data"
July 10, 2010
bullet OpenRules® Release 5.4.0 provides a live primer for the Decision Model, support for password-protected Excel files, and a few enhancements and bug fixes.
June 29, 2010
bullet OpenRules and Knowledge Partners International will host an Executable Decision Model bootcamp at the RulesFest in October 2010.
May 20, 2010
bullet OpenRules successfully conducted hands-on training at The Wyndham Garden Hotel, Newark Airport, NJ. OpenRules expresses  its appreciation to a new customer Nishikawa Corporation for supporting this event.
May 11-13, 2010
bullet OpenRules® BRMS has been selected by Arc Worldwide, which provides marketing services to such clients as Procter & Gamble, United Airlines, and McDonald's. Arc Worldwide develops and manages direct marketing and promotional campaigns and point-of-sale marketing efforts. Arc operates through more than 40 offices located around the world. It is a unit of Leo Burnett, a global ad agency of French conglomerate Publicis.

bullet OpenRules® Release 5.3.2 has been introduced together with a new OpenRules product "ORD" that is a special add-on for building complex, rules-based questionnaires. Read more.
October 15, 2009

bullet OpenRules is proud to announce that the United States Internal Revenue Service (IRS) awarded OpenRules, Inc. with a new government contract "Machine Learning Models Research and Development with NRP and LMSB Data".
September 20, 2009
bullet OpenRules, Inc. became an official supplier of BRMS software and services for Fiserv, Inc., the world’s largest service provider to banks, credit unions, and lending institutions.  OpenRules effectively supports Fiserv's financial electronic commerce services including receiving and paying bills online through 15,000 retail outlets.
September 4, 2009
bullet OpenRules® Release 5.3.1 improves OpenRules effectiveness in multi-threaded environments by supporting real parallelism.  Read more.
July 1, 2009

bullet OpenRules announced a fast-support online service Live Assist. Upon your request an OpenRules expert conducts a remote session addressing your particular problem by studying it with you on your own computer.
June 24, 2009
bullet OpenRules, Inc. successfully completed Phase 2 of the government contract “Integrating Machine Learning Models With Business Rules Environment” issued by the National Headquarters Office of Research, Internal Revenue Service (IRS). 
May 2, 2009
bullet The new Release 5.3.0 introduces External Rules, allowing a user to create and maintain business rules outside Excel files: in DB, XML, GUI, Java, and custom sources. Read more.
March 16, 2009

bullet OpenRules has been nominated as a finalist for the Best Developer Tool category of the Eclipse Community Awards.
March 4, 2009
bullet OpenRules became a sponsor at the 12th Business Rules Forum in Las Vegas
bullet OpenRules® 5.2 provides an important update for the underlying Apache POI API that is used to access Microsoft format files. The new release switches to the latest POI 3.2 FINAL. Read more here.
January 20, 2009
bullet OpenRules CTO presented "A Unified Business Interface for Modeling and Solving Constraint Satisfaction Problems" at the OMG Technical Meeting in Santa Clara, CA
December 8, 2008
bullet OpenRules was a sponsor at the 11th Business Rules Forum in Orlando with two successful presentations: 1. Integrated Business Rules and Constraint Programming Technologies for EDM; 2. Applying Business Rules to Complex Patent Data Processing - EPO Experience
October 26-30, 2008

bullet OpenRules participated in October Rules Fest in Dallas presenting "Using Constraint Programming in Business Rules Environments
October 22-25, 2008
bullet The US Internal Revenue Service (IRS) awarded OpenRules, Inc. with a new contract. The new contract is the second phase of the successfully completed project Integrating Machine Learning Models With Business Rules Environment” issued by the National Headquarters Office of Research, Washington DC
September 12, 2008
bullet OpenRules 5.1.0 simplifies the creation and maintenance of enterprise-class business rules repositories. Using advanced rule templates, OpenRules customers may specify rules implementation logic in a few templates and reuse it in multiple business rules categories.  With 5.1 you may define default rules directly in templates, support partial rules implementations and optional rule conditions and actions making rules repository more stable and flexible.
August 25, 2008
bullet OpenRules has published Step-By-Step Tutorials for different development frameworks including Google GWT, Spring, Apache Tomcat, BEA WebLogic, IBM WebSphere and RAD.
June 1, 2008
bullet OpenRules® 5.0.2 is a minor release that adds more functionality to the JSR-94 reference implementation, restores JDK 1.4 backward compatibility, and fixes some bugs
April 20, 2008
bullet OpenRules-5, a new major release that introduces Rule Templates has been announced.  OpenRules Release 5.0  essentially simplifies rules repository construction and management and expedites initialization and execution of the OpenRules Engine.  See Release Notes 5.0
March 29, 2008
bullet European Patent Office and OpenRules will do the presentation "Applying Business Rules to Complex Patent Data Processing - EPO Experience" at The 11th International Business Rules Forum
bullet Release 4.1.2 provides important bug fixes for handling Excel dates and merged cells - read release notes
January 14, 2008
bullet OpenRules, Inc. has successfully completed the US IRS contract “Automating Business Rules Creation Using Machine Learning Models” issued by the National Headquarters Office of Research, Internal Revenue Service (IRS).  Read more
November 13, 2007
bullet Dennis Byron, Analyst, ebizQ, published a review "Open Source Business Intelligence Megatrends", in which he describes OpenRules Rules-based BI: "OpenRules is an example of a rules-based OSS BI application. It offers a methodology, along with OSS tools and professional services for business analysts rather than or in concert with developers. This is an interesting approach and an approach that will be important in the long run to grow all categories of OSS applications." Read the entire  review
October 29, 2007

bullet OpenRules, Inc.'s booth was among the most popular places at the 10th Business Rules Forum in Orlando, FL. Read more
October 21-24, 2007
bullet OpenRules announced Rule Compressor���, a new add-on that employs integrated machine learning and business rules techniques to automatically compress complex classification rules.  Rule Compressor may effectively minimize the number of rules and/or simplify their structure by automatically discovering new thresholds and eliminating non-essential attributes.  OpenRules offers rules compression and optimization services regardless of the rule engine being used by the customer.
October 10, 2007

bullet Vero Insurance New Zealand selected OpenRules for its enterprise-class business rules management system.  Vero subscribed to OpenRules technical support and acquired a package of OpenRules commercial licenses
September 28, 2007
bullet OpenRules® Release 4.1.1 is a minor release that adds new features mainly to OpenRules Forms and tunes OpenRules to work with the latest versions of 3rd party products
September 20, 2007
bullet OpenRules® 4.0 is a major release that adds advanced features such as single-hit decision tables, direct access to rules saved in databases with built-in version control, use of natural language expressions, and more
July 20, 2007
bullet OpenRules signed a licensing and support agreement with Thomson Global Resources, a leading global provider of integrated solutions in the fields of law, tax, accounting, financial services, scientific research and healthcare. The agreement allows Thomson Medstat to use and distribute OpenRules® as a business rules repository for Advantage Suite®, a powerful, decision support tool linked to a comprehensive, integrated warehouse of medical claims and encounter data, pharmaceutical drug utilization, eligibility information, and performance measures.
May 18, 2007
bullet Software House International (SHI) became an official OpenRules reseller with the sale of OpenRules® commercial licenses and support packages to Blue Shield of California.
March 2, 2007
bullet Business Rules Journal published  "Business Rules Forum 2006 Vendor Panel ~ The Future is Now". Six BR vendors including OpenRules shared their vision of the future and the very real possibilities of today. Read here
February 7, 2007
bullet Dresdner Bank acquired OpenRules® support packages and commercial licenses for its enterprise-class financial application.
November 15, 2006
bullet OpenRules successfully presented Open Source Rules at the 9th Business Rules Forum in Washington, DC. Read more
November 5-9, 2006
bullet Visitar announced 360° Care viaVisitar Version 2.0 for innovative customer relationship management (CRM) and sales force automation (SFA) solutions that link rich telephony capabilities with business applications to improve efficiency and enhance customer and employee interactions. Core interaction capabilities of Visitar solutions are based on OpenRules®. See presentation
November 1, 2006

bullet OpenRules, Inc. has been awarded a government contract “Automating Business Rules Creation Using Machine Learning Models” issued by the National Headquarters Office of Research, Internal Revenue Service (IRS)
October 17, 2006
bullet OpenRules announced the availability of a new major OpenRules Release 3.0 that dramatically simplifies OpenRules configuration and integration problems
September 18, 2006
bullet A major international bank successfully completed development of an OpenRules-based engine that drives risk calculation and security rules for a strategic application within the bank. Contact us for details and references.
August 25, 2006
bullet Visitar announced general availability of its SaaS service that uses OpenRules for interactive configuration of its multi-tenant product that integrates CRM with computer telephony. 
March 27, 2006 Raleigh, NC
bullet OpenRules, Inc. introduced a Jump-Start service designed to make a customer team productive and self-sufficient with OpenRules as quickly as possible.  The service is available for US and European customers
May 20, 2006
bullet OpenRules® 2.3.0 enhances web development tools and upgrades 3rd party tools.
February 6, 2006
bullet OpenRules® 2.2.1 supports JDK 5.0 and Eclipse 3.1 and includes a Java library to support dynamic dialogs.
November 01, 2005
bullet OpenRules at the International Business Rules Forum in Orlando on November 6-10, 2005.
October 5, 2005
bullet OpenRules�� 2.2.0 essentially simplifies integration with different web application servers
September 7, 2005
bullet OpenRules published an implementation of "LoanDynamics", a web application that supports a dynamic loan approval process and demonstrates the ability to dynamically add/delete/modify different securities related to an initial loan application.
August 8, 2005
bullet Big Faceless Organization (BFO), the leading global provider of Java reporting solutions, announces partnership with OpenRules, Inc.
May 6, 2005

bullet OpenRules® 2.1.0 improves Web Interaction and multi-platform support.
May 5,2005
bullet incorporates OpenRules® Web services into its new online marketplace.
April 18, 2005
bullet OpenRules-2 moves beyond a pure BRMS to Web Application Development announcing availability of a new Open Source Suite of tools "OpenRules-2" that supports development and deployment of dynamic Web Applications with Forms Layouts and Interaction Rules defined in Excel.
March 16, 2005
bullet OpenRules successfully exhibited at the International Business Rules Forum in Las Vegas
November 8-11, 2004
bullet OpenRules Release 1.1 is available for free downloads.
November 5, 2004
bullet OpenRules delivers to IRS a new phase of the Strategic Compliance Planning Model (SCPM). 
October 30, 2004
bullet A new enhanced OpenRules release 1.0.2 has been announced.
May 28, 2004
bullet selected OpenRules to enhance its online marketplace.
May 6, 2004
bullet A new OpenRules release 1.0.1 is available for downloads.
April 19, 2004
bullet The first public release of OpenRules.  OpenRules is available for free downloads as an Open Source BRMS product.  
December 12, 2003

bullet OpenRules has been successfully used for a complex loan approval application. See a presentation at the 6th Business Rules Forum on November 8, 2003 (adjusted to OpenRules).
bullet A beta release of OpenRules is available upon requests.
November 1, 2003




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