VisiRule Expert Systems Software

Deliver Complexity Simply

VisiRule combines the very best of convergent decision trees, flowcharts and document generation into a single Low-Code No-Code automation tool.


VisiRule enables subject matter experts to rapidly build and test intelligent advice and troubleshooting guides visually, and deliver them as interactive web apps, Intelligent ChatBots or as embedded Business Rules components.

You can use VisiRule's visual rules authoring to handle those common but non-trivial queries that customers need solving in a cost-effective way anywhere, anytime.


You can keep current your online advice as regulations, best practice and people change and deliver context-specific advice with explainable recommendations plus generated documents.


VisiRule generates executable code from the diagram. This eliminates the need to encode know-how into some “computer gobbledygook”.


Expert Decision Software

Use VisiRule to:

  • Triage & troubleshoot legal, tax, medical and engineering problems

  • Deliver legal, medical and financial risk assessment with dynamic scoring and reports

  • Create personalised recommendations using Intelligent ChatBots

  • Provide self-service prescriptive analytics across all devices

  • Increase sales via online sales configuration and quotation solutions

  • Build interactive guided tours with video, images and conditional logic

Insurance Expert System ChatBot Report
Expert Systems Questions

Simplify Complexity with VisiRule


VisiRule Author is intuitive and easy-to-use. You can quickly create and test your business logic with minimal training.


VisiRule understands the context and purpose of its various nodes and links and guides you in the creation of decision models.


You can start by using interactive questions to obtain answers, and later switch to accessing external databases, CSV, Scada, IoT etc.

Rapid Prototyping Software

VisiRule lets you draw, compile and run your logic charts instantly. This enables rapid prototyping plus incremental development.


VisiRule combines lean AI technology with modern cloud-based delivery to provide a scalable and cost effective solution.

Easy to Create

Programming via Flow Charts

VisiRule is a visual tool which combines smart diagramming, AI reasoning, complex calculations and document automation. Like Visio and MindMap, you simply draw a model, but one you can execute as active applications.

Visual Knowledge

Visual knowledge is so much easier to understand, validate, maintain and share than text. VisiRule’s programming via flow charting permits the rapid prototyping and accurate capture of knowledge.

Low-Code No-Code Development

VisiRule is an intuitive Low-Code No-Code tool. VisiRule's advanced code generation capability allows the model to be immediately executed and tested. You can read an article about No Code and Lawyers here.


Document Creation

VisiRule includes a powerful document generation engine to automate document output in various formats such as text, PDF, XML, HTML and RTF. 

By associating suitably tagged document templates, i.e. boilerplates, VisiRule can produce high-quality documents using the answers gathered in the session. Not limited to inserting simple values, VisiRule can combine complex logic with conditional text selection and insertion.​

Easy to Deploy

JavaScript Delivery

Charts can also be delivered client-side using XML and a dedicated JavaScript engine to ask the questions and collate the answers. Users can revisit and re-answer questions in a highly responsive and convenient way.

Custom HTML Presentation

Questions can be presented in house-style simply by editing the CSS style sheets associated with the various assets, brands and icons. 

Put your brand in their pocket! 


Automated Delivery

VisiRule automatically constructs and evaluates the questionnaire, the Business Rules and calculations directly from the chart itself.

Connected & Embedded Delivery

VisiRule can be be delivered using interactive web forms and/or via embedded, connected services using REST and JSON or a chatbot.


Easy to Share

Knowledge is Precious

VisiRule can help your company capture and retain valuable knowledge which can be shared and discussed as pictures or XML with colleagues.

VisiRule provides a clear way of representing decision logic - one that non-technical business users can immediately access and understand.​ 

Expertise can be shared across a wide group to help gather a consensus. After all, a picture is worth 1,000 words. The knowledge in a chart can be exported as a picture to help document the process.

VisiRule Author icon


VisiRule Author is a dedicated diagramming tool to draw and test charts

VisiRule Publish Icon


VisiRule Publisher compiles the chart to create a questionnaire with code

VisiRule Execute icon


VisiRule Server executes each question page + the associated rules to compute the following page

VisiRule Generate icon


VisiRule generates a conclusion + reports, documents & outputs using the answers given


Easy to Explain

Justify Reasoning

Explainable AI means a solution can explain itself. Each visitor's execution path can be explained in terms of HOW, WHAT and WHY. Contrast this to neural nets which are black boxes and can NOT explain their reasoning.

Export Answers

User sessions, including all answers, calculations and conclusions, are logged and can be distributed via email or pushed into a database.

Audit Knowledge

VisiRule includes a Truth Table Generator which enumerates all possible paths to provide an audit of the knowledge in the chart.

Easy to Maintain

Update and Review

As your chart gets used and the legal or business context changes, you can amend, revise and enhance it visually, and so ensure that it is up-to-date.

Validate and Test

The VisiRule test harness allows charts to be auto-run using a file of test data. The results can be compared with approved or previous results.


VisiRule Analytics helps you see how a chart is being used and gain insight into how to improve it..


Four Quadrants of Reasoning

Knowledge can come from historical data using Machine Learning, or from human experts or both. VisiRule FastChart enables VisiRule to access predictive models to create an initial chart. Read how the Titanic dataset was used in such a way.

VisiRule decision tree flow charts can be delivered interactively or data-driven. In hybrid delivery mode, some questions are asked, and others answered using existing data, web services or IoT streams.

Expert Systems Software Technology


Multi-Layered Architecture

VisiRule is flagship of a Low-Code No-Code No-Cliff AI platform comprising:

  • Flex - a Low-Code, expert system software tool 

  • Prolog - a powerful No-Cliff AI programming language.


Flex Expert Systems Software

VisiRule generates code in terms of Flex, LPA's powerful rules-based expert system shell toolkit which supports both forwards and backward chaining rules with an English-like Knowledge Specification Language (KSL).


LPA Prolog

Prolog is a well proven AI programming language with pattern matching and logical inference. Prolog provides a robust foundation for the LPA stack. The LPA implementation includes a dedicated string datatype which provides the basis a comprehensive suite of NLU/NLP functions.

Logic Programming Associates

Logic Programming Associates Ltd (LPA) is a highly respected UK software company working in the area of AI and commercial rule-based and expert system software solutions since 1981. Coming up to 40 years in applied AI!


Low-Code and No-Code development platforms promise to help professional and non-professional developers alike create applications with greater efficiency, thus, increasing productivity.


Explore VisiRule - Try a Demo Today!

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