Rules Engines allow your application to process business rules while maintaining the rules themselves outside the source code in manageable and configurable manner. This enable the creation of systems which can be configured to meet the changing needs of evolving busniess.

Rules Engine Components & Tools by SpreadsheetGear LLC

SpreadsheetGear 2008 4.0.5

SpreadsheetGear 2008 is the most significant upgrade since SpreadsheetGear for .NET 1.0 was released. New features include robust Excel 2007 Open XML (.xlsx) support, dynamic chart and range image generation, comprehensive Excel compatible charting support, more rows and columns, named cell styles, RGB colors, theme colors with tinting and shading and more.

Rules Engine Components & Tools by Catalyst Development Corp

LogicGem V3.00.3000

For programmers and analysts, LogicGem proves logic and business rules by finding missing rules, ambiguities, contradictions and redundancies. They are displayed visually and include tools to automatically correct any errors

Rules Engine Components & Tools by VDE Technologies LLC

RuleLab.Net 1.7.0

RuleLab.Net is a web-based system for implementing the business rules that operate on an application's XML data. Build, test, and deploy your rules using the web browser; integrate them via the forward chaining rules engine component or web service. Create web-based expert systems using the AJAX script and the rules designer. Features include centralized repository, English-like syntax, XML rule format, strong data types, calculation formulas, computational and aggregate functions.

Rules Engine Components & Tools by ILOG, Inc.

ILOG JRules V6.6 -  Introducing ILOG JRules 6. It's the only business rule management system that provides enterprise business rule management without compromise. Maintain full control over your business policy changes and get everything you want with one tool. Accelerate your time to business value while reducing your total cost of ownership. Stay on the competitive edge.

ILOG Rules  - 

ILOG Rules for .NET V3.0 -  Create Business Rules With Microsoft Office - Now, changing business rules is as easy as opening a Microsoft Word document. With ILOG Rules for .NET, policy managers and business analysts use Microsoft Office to access ILOG's leading business rule authoring and management tools.

Rules Engine Components & Tools by YASU Technologies

QuickRules Analytics V1.5.1 -  QuickRules Analytics analyzes business policies using historical data and quantitatively measures discrepancies between the current policies and stated business goals. Business users can also use QuickRules Analytics to measure the effectiveness of a new policy against simulated market data and take corrective action before implementing the policy in the real world.

QuickRules Business Rules Engine V4.5 SP1 -  QuickRules Standard Edition is a Java rule engine that can be used to design, develop, and manage business rules. QuickRules Standard Edition provides ideal tools to easily create and manage business rules in a robust, scalable and high performance environment. QuickRules provides the ability to design, develop, deploy, and manage business rules by application architects, business users, and business managers.

QuickRules.NET V3.1 -  QuickRules.NET provides a comprehensive set of tools for developing, deploying, and management of business rules in the .NET environment. It provides for clean separation of business rules from the application code. It seamlessly integrates into your application whether it be a ASP.NET based web application or windows forms based or a distributed application based on XML Web services.

Rules Engine Components & Tools by InRule Technology

InRule  -  InRule is built entirely on the .NET platform, leveraging a component architecture that delivers unparalleled rule processing performance and flexibility. From the feature rich rule authoring environment to the optimized execution of the business rule engine, InRule unifies the domains of managed business logic and traditional systems processes.

Rules Engine Components & Tools by Transparent Logic Inc.

Maestro  -  Maestro gives you a graphical tool that puts you in charge of your business logic. Maestro lets you change business rules and processes: easily, quickly and inexpensively. After logic has been created and verified, it installs onto a server as a web service, exposing this logic for applications to use. (Your logic is easily available to both business users and IT staff!) Maestro does for business rules what databases do for data!