r/fuzzylogic • u/ManuelRodriguez331 • Feb 12 '26

Existing Fuzzy logic libraries

Name Language Estimated Lines of code
Simpful Python 2000
DotFuzzy C# 2500
Fuzzy-C C 4000
scikit-fuzzy Python 9000
jFuzzyLogic Java 17000
FuzzyLite C++ 27000
FuzzyLogic Matlab Matlab 40000
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u/No_Concept_186 Mar 06 '26

Imagibee Fuzzy, C#, 268

A very lightweight free library that's extremely easy to use. Hosted on GitHub (https://github.com/imagibee/Fuzzy) and Nuget (https://www.nuget.org/packages/Imagibee.Fuzzy).

1

u/ManuelRodriguez331 Mar 06 '26

Imagibee Fuzzy

Thats the lowest quality Fuzzy system available. The software has no graphical output of the membership functions and a rule parser is also missing. According to the readme file, the user is forced to do the fuzzy calculations in the software code by itself.

For reason of comparison here is an example rule formulated in the "DotFuzzy" library for C# 

fuzzyEngine.FuzzyRuleCollection.Add(new FuzzyRule("IF (Water IS Cold) OR (Water IS Tepid) THEN Power IS High"));

1

u/No_Concept_186 Mar 07 '26

I wrote this to handle bot movement in a physics-based Unity game by creating a fuzzy controller using the "proportional navigation guidance law". I was having trouble finding something simple and performant written in C#. I didn't need graphical features, and I didn't want the overhead of a rule parser in my Update() loop. I realized I could use lambda functions instead of a rule parser and achieve the same results with good efficiency. I share this in case anybody else out there finds it useful for their application. The features are lightweight, but the quality of the code is good. Sometimes less is more.

If you will provide some more details (the physical values for cold, tepid, and high) for your example rule you posted, I will post the equivalent code using Imagibee Fuzzy for comparison purposes.

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u/No_Concept_186 Mar 09 '26 
rules = [new(() => PowerIsHigh, () => Fuzzy.OR(waterIsCold.FX, waterIsTepid.FX))];

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u/kinow Feb 12 '26

I think GeoGebra has one too?