C# Rules

Open-source C# projects categorized as Rules

Top 4 C# Rule Projects

  1. RulesEngine

    A Json based Rules Engine with extensive Dynamic expression support

    Project mention: Building A JSON Rules Engine from Scratch with MSRulesEngine β€” Part 1 | dev.to | 2025-02-09

    Hi Coding Buddy!! 😊 Welcome to the learn series where we will build an rules engine for a childhood wonderland called β€œArcade”. In this series we will concentrate on learning together a JSON based rules engine developed by Microsoft. This is the link to their Open-Source Git hub repo. In order to move forward seamlessly. Please make sure you have checked the pre-requisites section below. To have everything downloaded for us to work together.

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  3. NRules

    Rules engine for .NET, based on the Rete matching algorithm, with internal DSL in C#.

  4. DDD-NoDuplicates

    Some design approaches to enforcing a business rule requiring no duplicates. Domain driven design.

  5. RulesEngineEditor

    Editor for Microsoft RulesEngine - Blazor UI library intended for integration in Web or Desktop

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).

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C# Rules related posts

  • Building A JSON Rules Engine from Scratch with MSRulesEngine β€” Part 1

    2 projects | dev.to | 9 Feb 2025
  • How do you handle complicated decision trees?

    1 project | /r/Blazor | 30 Apr 2023
  • Need help in Designing rule engine in .net

    1 project | /r/dotnetcore | 22 Apr 2023
  • Microsoft's Rule Engine - Rule question

    1 project | /r/csharp | 24 Jan 2023
  • Ideas for frameworks to build a Rules Engine

    1 project | /r/dotnetcore | 14 Nov 2022
  • A JavaScript Rules Engine in .NET 6 Using Jint

    2 projects | /r/dotnet | 9 Feb 2022
  • Business Rules Engines?

    1 project | /r/AskProgramming | 17 Oct 2021
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    coderabbit.ai | 25 Mar 2025
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Index

What are some of the best open-source Rule projects in C#? This list will help you:

# Project Stars
1 RulesEngine 3,843
2 NRules 1,554
3 DDD-NoDuplicates 563
4 RulesEngineEditor 414

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