Top 6 Business Rule Engines 2024

Endless Excel spreadsheets with decision logic described in multiple places, or a hard-coded legacy solution that no one understands and uses. Does it sound familiar?

Lukáš Čapek
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Many organizations are stuck in the chaos of outdated decision-making methods—clunky systems that slow them down, cause mistakes, and spark endless frustration. That’s where business rule engines step in: smart, streamlined solutions built to centralize and automate complex decision logic. In this guide, we’ll break down the top six business rule engines of 2024, giving you the tools to modernize your workflows and take back control of your decision-making process—no stress, no mess.

Comparison between the TOP 6 Business Rule Engines
Parameter DecisionRules Drools InRule FlexRule Higson Slide Rule Decisions
Low-code/no-code
SLA and support 24/7
API integration
Deployment flexibility
Role-based access control
Infrastructure auto-scaling
SDKs
Custom Code Very Limited
Business Intelligence
Compliance - ISO 27001

Choosing the Right Business Rules Engine

Before transitioning to a new Business Rule Management System such as DecisionRules, it's crucial to make a thorough assessment to ensure it meets your specific needs, such as speed, scalability, and seamless integration with your existing software. With numerous vendors offering different solutions, the challenge lies in selecting the right one. Not all rule engines are created equal, so understanding the key differences is essential to making an informed decision.

While first-generation decisioning platforms established in the 90’s pioneered the field of automated decisions, these often suffered from cumbersome legacy design, steep learning curves and the need to be able to write and understand code. On the other hand, modern solutions with a focus on low-code/no-code interfaces, have transformed the way businesses manage rules. These solutions empower non-technical business users to create, modify, and manage rules without relying on IT or developers. This shift not only speeds up decision-making but also brings business users closer to the rule-making process, ensuring that the logic aligns with real-world business needs.

Types of Business Rule Engines - Traditional vs. Modern.
Types of Business Rule Engines - Traditional vs. Modern.

In-Depth Look at Leading Business Rule Engines 

Now, let’s dive into the top 6 platforms making waves in the market. We’ll break down their standout features, pros, and cons so you can confidently pick the best fit for your needs. Each business rule engine brings its own unique strengths, and this comparison will help you zero in on the perfect match for your project.

1. Drools

Drools is a widely used, open-source Business Rule Management System developed by Red Hat. It employs a rule-based system where decisions are defined through "if-then" logic, making it effective for automating complex processes. Drools integrates seamlessly with Java applications, offering flexibility for developers. A key feature is the Drools Workbench, a tool for managing and editing rules in a graphic interface. However, it requires significant technical expertise for setup and maintenance, which can pose challenges for non-technical users.

Drools Key features

  • Advanced rule engine supporting complex logic, decision tables, and rule flows 
  • Open source software 
  • Vast community offering support
  • Integrated process definition using BPMN standard 
  • Drools Workbench: Provides a user-friendly graphical interface for managing and editing rules
PROS

Powerful Decision-Making: Supports complex business logic and advanced inference mechanisms for efficient rule processing.

Flexible and Customizable: Offers extensive customization options and integrates well with Java applications.

Highly Scalable: Suitable for handling large-scale rule sets and high transaction volumes.

Open-Source: Free to use, making it a cost-effective solution for customers.

Role management: Drools Workbench allows the management of roles and permissions in one place.

CONS

Steep Learning Curve: Requires significant technical expertise, especially for setup and maintenance.

Limited Non-Java Support: Best suited for Java-based environments, limiting flexibility for other platforms.

Lack of professional Support: As an open-source software, Drools does not provide any professional support.

Optimization: Complex rule sets require fine-tuning and optimization, otherwise it may result in performance issues.

Complex Rule Management: As rule sets grow, managing and organizing them can become cumbersome.

Summary

Drools is a robust solution, however, with its steep learning curve and technical requirements it is best suited for enterprises with the ability to have a designated team for maintenance and rule changes. Even though it is a free product, the operating costs can easily exceed those of professional solutions. 

DecisionRules vs Drools

DecisionRules vs Drools comparison
Parameter DecisionRules Drools
Low-code/no-code
SLA and support 24/7
API integration
Deployment flexibility
Role-based access control
Infrastructure auto-scaling
SDKs
Custom Code
Business Intelligence
Compliance - ISO 27001

2. InRule

InRule is a powerful business rule engine that empowers organizations to enhance operational efficiency and drive informed decision-making. By allowing users to define and manage business rules, InRule enables both technical and non-technical users to contribute to business logic. Its cloud-based architecture allows for easy deployment and management. On the other hand, InRule pricing may be significant for small and medium-sized companies. 

InRule Key Features

  • User-Friendly Interface: InRule provides an intuitive design that enables business users to easily create and manage rules
  • Visual Rule Designer: This feature allows users to model complex business logic visually, making it easier for stakeholders to understand and adapt rules
  • Integration Capabilities: Seamlessly integrates with a variety of applications, including CRMs, ERPs, and other enterprise systems
  • Version Control: Provides built-in versioning and audit capabilities to track changes and maintain compliance
  • Cloud and On-Premise Deployment: Flexible deployment options allow businesses to choose between cloud-based or on-premise installations
PROS

Strong Support and Documentation: InRule provides comprehensive support and documentation, assisting users in troubleshooting and maximizing the platform’s capabilities.

Graphical low-code solution: InRule's user-friendly interface empowers business users to manage rules, reducing reliance on IT teams.

Robust Integration: Offers extensive integration capabilities with various applications, enhancing interoperability within the enterprise ecosystem.

Visual Analytics: InRule provides visual analytics tools that allow organizations to easily track and analyze rule performance and decision outcomes.

Integrated Connectors: InRule comes with a variety of pre-built connectors that enable seamless integration.

CONS

Cost: InRule may involve licensing fees that can be significant for some organizations, particularly small businesses.

Complexity: InRule provides a graphic rule designer, however, with increasing rule size and complexity, it may require technical knowledge to fully leverage the tool.

Learning Curve for New Users: Although designed to be user-friendly, new users may still face a steep learning curve when familiarizing themselves with the platform’s capabilities and functionalities.

Customization: As a closed platform, InRule allows only limited customization according to customer needs.

Limited Community Support: Compared to open-source solutions, InRule relies mostly on SLA and community support is limited.

Summary

InRule offers a robust business rule engine solution featuring a drag-and-drop rule designer that prioritizes the needs of business users. With integrated connectors to third-party software and comprehensive business analytics, InRule provides various monitoring options to enhance decision-making. However, InRule focuses on enterprises and its pricing may deter small and medium companies from adopting the tool.

DecisionRules vs InRule

DecisionRules vs InRule comparison
Parameter DecisionRules InRule
Low-code/no-code
Free Academy
API integration
Deployment flexibility
Role-based access control
Infrastructure auto-scaling
Flexible pricing plans
Customization Partially
Business Intelligence
Global Cloud Availability

3. FlexRule

FlexRule is a dynamic rule platform that empowers organizations to enhance their operational efficiency and make data-driven decisions in industries such as Insurance, healthcare, finance and utilities. By providing an accessible interface for both business and technical users, FlexRule allows teams to collaboratively define and manage complex business rules. However, some users may find the platform’s design to be somewhat outdated, which can impact the overall user experience.

FlexRuleKey Features 

  • Business-Friendly Rule Language: The platform uses a natural language syntax for defining rules, making it easier for non-technical users to understand and create business logic.
  • Rule Versioning and History Tracking: The platform maintains a history of rule changes, allowing for rollback and transparency
  • Collaboration and Governance: FlexRule supports collaborative rule development, allowing multiple stakeholders to contribute to and review rules
  • Training and Support Resources: FlexRule offers training programs, documentation, and customer support to help users effectively utilize the platform
  • Multi-Tenancy Support: FlexRule supports multi-tenancy, allowing organizations to manage multiple clients or divisions within a single instance.
PROS

Low-code solution: This approach encourages business users to manage the rules without the need of IT personnel.

Robust Integration Capabilities: FlexRule can seamlessly connect with various applications and data sources.

Flexible Deployment Options: Organizations can choose between cloud-based or on-premises deployment.

Scenario Simulation: Users can simulate different scenarios to see the impact of rule changes before implementing them.

Real-time analytics: The platform supports real-time data visualizations, enabling users to see the immediate impact of rule changes and decision-making processes.

CONS

Cost Considerations: Licensing and implementation costs may be significant for small to medium-sized businesses, potentially limiting accessibility.

Outdated Design: Some users may find the platform’s user interface to be somewhat outdated, which can affect the overall user experience.

Complexity: Even though FlexRule offers comprehensive solutions to business rules, the learning curve may be steep as new users must familiarize themselves with the product.

Performance Issues with Large Datasets: Causing performance slowdowns when working with very large datasets or complex rule sets, which can hinder efficiency.

Integration Challenges: Some users may encounter difficulties when integrating FlexRule with legacy systems or less common applications.

Summary

FlexRule is a powerful solution for organizations in fields like finance, healthcare, insurance, and telecommunications, enhancing decision-making through effective rule management and data visualization. However, potential users should be aware of challenges, including an outdated design and a learning curve for new users. These factors, along with its pricing, may affect adoption, especially among small and medium-sized enterprises. 

DecisionRules vs FlexRule

DecisionRules vs FlexRule comparison
Parameter DecisionRules FlexRule
Low-code/no-code
User-friendly interface
API integration
Public cloud
SLA and support 24/7
Infrastructure auto-scaling
Flexible pricing plans
Native Cloud Support
Thorough and free Docs
CI/CD pipelines

4. Higson

Higson (formerly Hyperon) is a high-performance rules automation platform focused on efficient rule execution. Designed to manage business logic via a low-code solution, it caters to industries like insurance, finance, and logistics. As an emerging player among decisioning platforms, Higson offers a modern, agile approach compared to more established rule engines.

Higson Key Features 

  • High-performance rule execution: Optimized for fast and efficient processing of complex business logic, ensuring swift decision-making
  • Excel integration: Seamless integration with Excel, allowing users to import and manage data-driven rules directly from familiar spreadsheets
  • Business-user studio: A low-code interface that enables non-technical users to easily design, modify, and manage rules without extensive coding knowledge
  • Integration with other systems: Robust API support for smooth integration with external systems and platforms, enhancing operational flexibility
  • Custom-tailored support: Offers personalized support and customization options to meet specific business needs, ensuring optimal performance and fit
PROS

Low-code solution: Allows business users to design and manage rules without deep technical expertise, speeding up implementation and reducing reliance on developers.

Versioning: Built-in rule versioning ensures easy tracking of changes and facilitates governance, compliance, and rollback when needed.

Organizations and role-based access control: Offers strong access control, allowing organizations to manage user permissions and maintain rule governance across different teams.

Works with SQL databases: Provides seamless integration with SQL databases, making data management and rule execution more flexible.

Dedicated SLA: Offers service-level agreements (SLA) with custom-tailored support to meet specific business needs and ensure system reliability.

CONS

Lack of CI/CD pipeline integration: Does not natively support continuous integration/continuous deployment (CI/CD) pipelines, potentially complicating rule deployment and automation processes.

Learning curve: Despite the low-code interface, there may still be a steep learning curve for non-technical users, especially in managing complex rule sets.

Limited built-in analytics: Lacks advanced analytics for tracking rule performance and impact, requiring additional tools for deep insights.

Cost-effectiveness: Pricing starts at 10,000 USD per year, which may be a barrier for smaller companies or those with limited budgets.

Limited custom-coded logic: While it supports low-code rule creation, the platform has constraints in handling highly customized or complex coded logic.

Conclusion

Higson is an emerging decision management system designed for efficient rule execution in industries like insurance, finance, and logistics. Its low-code platform allows non-technical users to easily manage business logic, with features like Excel integration, versioning, and role-based access control. On the other hand as a young software, it lacks some advanced features like native CI/CD pipeline support, moreover starting price might discourage smaller organizations. 

DecisionRules vs Higson

DecisionRules vs Higson comparison
Parameter DecisionRules Higson
Low-code/no-code
User-friendly interface
API integration
Business Intelligence
Role-based access control
Infrastructure auto-scaling
Flexible pricing plans Partially
Custom code Very limited
CI/CD pipelines
Compliance - ISO 27001

5. Sliderule

Sliderule is an emerging product in the business rule engine space, particularly focused on risk management. Although it offers targeted features for risk assessment and compliance, it is still building its competitive stance alongside more established industry leaders.

Sliderule Key Features

  • Specialization in risk management: Tailored features for assessing and managing risk make it ideal for organizations operating in high-stakes environments
  • Visual rule designer: The intuitive drag-and-drop interface allows users to create and modify risk rules without extensive coding, making it accessible to business analysts and non-technical users
  • Comprehensive audit trails: Built-in versioning and logging features provide detailed tracking of rule changes, ensuring compliance with regulatory standards and internal governance policies
  • Strong integration: Easily connects with various databases and third-party risk assessment tools, streamlining workflows and data accuracy
  • Real-time risk assessment: Offers tools for monitoring and analyzing risk factors in real time, empowering organizations to make informed decisions swiftly
PROS

User-friendly interface: The visual design simplifies the rule creation process, allowing business users to manage risk without heavy reliance on IT.

Comprehensive analytics and alerts: Provides robust analytics tools for monitoring risk performance and sends alerts for significant changes or threshold breaches, enabling proactive risk management.

Workflow automation: Supports the automation of risk assessment workflows, improving efficiency and reducing manual errors in decision-making processes.

Testing capabilities: Facilitates testing of risk rules in a controlled environment, allowing organizations to validate and refine their decision-making processes.

Direct data loading from SQL databases: Allows users to load and manipulate data directly from SQL databases, enhancing data accessibility and management.

CONS

Lack of custom coding capabilities: Limited options for custom code may restrict advanced users looking for highly specialized solutions.

New company with limited experience: Being an emerging product, Sliderule may still be building its reputation and expertise in the industry.

Specialization in one field: While its focus on risk management is a strength, it may limit its applicability in organizations needing a more general-purpose rule engine.

Complex initial setup: Setting up the system may require some technical expertise, particularly when integrating with existing infrastructure.

Support and SLA: As a newer player in the market, Sliderule may have limited support resources compared to more established vendors, which could impact response times and issue resolution.

Conclusion

Sliderule is a specialized decision engine that enhances risk management and compliance across industries like insurance, finance, and healthcare. With its user-friendly visual design, risk-centric features, and strong integration capabilities, it empowers organizations to automate complex decision-making processes effectively. However, potential users should consider the lack of experience, support challenges, and the absence of a formal SLA.

DecisionRules vs Sliderule

DecisionRules vs Sliderule comparison
Parameter DecisionRules Sliderule
Low-code/no-code
Complex rule support
API integration
SLA and support 24/7
Role-based access control
Infrastructure auto-scaling
Flexible pricing plans Partially
Custom code
Business Intelligence
Regional Cloud

VI. Decisions

Decisions.com is widely regarded as a benchmark in the realm of modern Business Rule Management Systems (BRMS). Known for its robust configurability, third-party integration capabilities, and high-performance rule execution, Decisions caters primarily to enterprise-sized organizations. It offers a low-code environment, enabling companies to automate complex decision processes without requiring extensive coding expertise. However, due to its vast features and configuration options, new users may face a steep learning curve before they become adept with the platform.

Decisions Key Features

  • Extensive Configuration Options: The platform provides a high degree of flexibility and customization, allowing users to tailor workflows and decision rules to meet specific business requirements
  • Connectors: Decisions.com includes numerous built-in connectors for third-party applications, enabling seamless integration with other systems
  • User-friendly: Designed with non-technical users in mind, the low-code interface allows business analysts to build and manage rule-based logic with minimal coding
  • High-Performance Rule Execution: Optimized for large-scale operations, Decisions.com ensures efficient processing of complex decision logic, allowing for real-time decision-making even under heavy workloads
  • Workflow manager: Decisions offers a workflow manager to automate any internal process with pre-built or custom steps
PROS

Low-Code Capabilities: The low-code interface makes it accessible to business users, reducing reliance on IT and speeding up rule deployment and updates.

Data Mining and Analytics: Decisions.com includes data mining capabilities, allowing enterprises to gain insights from rule execution data.

Customizable Workflows: Built with extensive workflow management, the platform enables users to design, automate, and monitor complex workflows.

Role-based access control: Strong role-based access control and user management features provide enterprises with security and governance possibilities.

Rule Versioning and Auditing: Decisions.com offers built-in rule versioning and auditing, ensuring transparency and compliance.

CONS

Complex Learning Curve for New Users: While low-code, the sheer volume of configuration options and integrations can be overwhelming for newcomers, requiring significant time for users to familiarize themselves with the platform fully.

Enterprise-Focused Pricing: Designed primarily for large enterprises, Decisions.com’s pricing structure can be prohibitive for SMEs or startups with limited budgets, potentially excluding smaller organizations from leveraging its capabilities.

Resource-Intensive Setup and Maintenance: Due to its extensive features and integrations, implementing and maintaining Decisions.com requires considerable technical expertise and resources, making it challenging for organizations with smaller IT teams.

Limited Suitability for Basic Use Cases: For simpler rule management needs, the platform’s advanced features may be excessive, potentially leading to inefficiency and a steeper learning curve for teams with straightforward requirementsComplex initial setup: Setting up the system may require some technical expertise, particularly when integrating with existing infrastructure.

Dependency on External Support: Given its complexity, some enterprises may need external consulting or support during implementation and ongoing management, which can add to the overall cost and resource commitment.

Conclusion

Decisions.com offers a powerful, flexible BRMS solution built for large enterprises, with capabilities well-suited for handling complex rules and decisioning processes. Its low-code environment, high-performance scalability, and extensive integration options make it ideal for companies with complex decision-making needs. However, its broad feature set and enterprise-level pricing may present challenges for smaller organizations, and the platform’s complexity can require a significant investment in user training and support.

DecisionRules vs Decisions comparison
Parameter DecisionRules Decisions
Low-code/no-code
Complex rule support
API integration
SLA and support 24/7
Third-Party connectors Partially
Infrastructure auto-scaling
Flexible pricing plans
Custom code
User-friendly interface Partially
Free Academy

How to select the best business rule management software

In today’s fast-paced business environment, the ability to automate decision-making processes through effective Business Rule Engines (BRE) is becoming increasingly critical. In this article, we analyzed multiple Business Rule Engine solutions, each with its own strengths and weaknesses. For a business user faced with a decision, key parameters such as ease of use, integration and scalability, cost considerations, and support and documentation should be carefully taken into account. By understanding how each platform aligns with these criteria, businesses can select a solution that not only meets their current needs but also supports long-term growth and operational efficiency.

Ease of Use and Accessibility

Across all platforms, the trend towards low-code/no-code solutions is evident, facilitating greater participation from business users in rule management processes. User-friendly interfaces, particularly those found in DecisionRules and Sliderule, enhance accessibility, allowing non-technical users to actively engage in creating and managing business rules without heavy reliance on IT. This democratization of rule management can lead to more agile decision-making and responsiveness to business needs.

Integration and Scalability

Effective integration capabilities are essential for ensuring that the BRE can operate seamlessly within an organization’s existing infrastructure. All platforms assessed provide some level of API integration, with varying degrees of support for third-party connectors. Scalability is also a common strength, enabling organizations to expand their rule management capabilities without facing performance bottlenecks. This is particularly critical for enterprises anticipating significant growth or those operating in dynamic market environments.

Cost Considerations

Pricing structures among the platforms vary significantly, with Decisions, FlexRule, and InRule being more enterprise-focused. This positioning may make them less accessible to smaller organizations, which could find greater value in DecisionRules or Higson, as these platforms offer more cost-effective solutions without compromising essential features. Drools, being open-source, presents a potentially cost-effective option but may involve hidden costs related to implementation and maintenance that organizations must be aware of when budgeting.

Support and Documentation

Comprehensive support and documentation are critical for successful implementation and ongoing management. Larger platforms like Decisions and InRule tend to offer extensive resources. In contrast, newer entrants like Sliderule might face challenges in this area, potentially impacting user experience and satisfaction. The community-driven support for Drools offers resources but may lack the responsiveness and structured guidance that some organizations require.

In summary, organizations must carefully evaluate their specific needs, budget constraints, and user capabilities when selecting a Business Rule Engine. Whether seeking advanced analytics, risk management features, or a user-friendly interface, understanding the strengths and limitations of each platform will empower businesses to make informed decisions that enhance their operational efficiency and decision-making processes. Ultimately, the right decision platform can serve as a catalyst for driving organizational success, enabling businesses to adapt quickly to changing market dynamics and regulatory requirements while fostering innovation and collaboration among teams.

  1. API - Interface, allowing to integrate decision platform with existing environment.
  2. Deployment flexibility - Multiple deployment options on public cloud, privately managed cloud, and on-premise.
  3. Infrastructure auto-scaling - Ability to dynamically increase performance when needed and decrease when redundant while customers pay only for what they need.
  4. Flexible pricing plans - Pricing according to customer needs based on number of API calls or enterprise plans for more demanding customers.
  5. Business intelligence - Direct PowerBI or other BI platform.
  6. Excel Add-In - Add-In directly in MS Platform allows to call custom rules directly from Excel.
  7. Comprehensive Documentation - Free, publicly accessible documentation with structured format.
  8. Academy - Free academy with video tutorials to quickly onboard new users and improve their user experience with the platform.
  9. Global Cloud Availability - Data centers around the globe improve performance and reduce latency.
  10. Regional Cloud - Ability to restrict the cloud on a predefined area. Important feature for a compliance in cases when data cannot leave certain area eg. European Union.
  11. Native Cloud Support - Native support of AWS, MS Azure and GCP deployment with Kubernetes and Docker support.

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