Top 23 expression-evaluator Open-Source Projects

• mathjs

  22 14,010 9.2 JavaScript

  An extensive math library for JavaScript and Node.js

  Project mention: Show HN: Heynote – A Dedicated Scratchpad for Developers | news.ycombinator.com | 2023-12-22

  The Math blocks are powered by Math.js (https://mathjs.org/).

• expr

  5 5,507 9.4 Go

  Expression language and expression evaluation for Go

  

  Project mention: Expr 1.16.5 | news.ycombinator.com | 2024-04-16

• InfluxDB

  www.influxdata.com

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• aviatorscript

  1 4,215 6.5 Java

  A high performance scripting language hosted on the JVM.

• RulesEngine

  10 3,348 5.7 C#

  A Json based Rules Engine with extensive Dynamic expression support

  

  Project mention: How do you handle complicated decision trees? | /r/Blazor | 2023-04-30

  Check out the Microsoft Rules Engine. Source: am contributor and wrote a Blazor editor for it

• cel-go

  7 2,027 8.8 Go

  Fast, portable, non-Turing complete expression evaluation with gradual typing (Go)

  

  Project mention: CEL on N resources? | /r/kubernetes | 2023-12-04

  There's a simple repl implementation in the cel-go repo that you can use https://github.com/google/cel-go/tree/master/repl/main. But not sure about what you actually want to do though. Has a bit of on XY problem feel to be honest.

• DynamicExpresso

  9 1,832 4.6 C#

  C# expressions interpreter

  

• EvalEx

  1 949 7.2 Java

  EvalEx is a handy expression evaluator for Java, that allows to evaluate simple mathematical and boolean expressions.

  

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• MathParser.org-mXparser

  2 886 5.3 HTML

  Math Parser Java Android C# .NET/MONO (.NET Framework, .NET Core, .NET Standard, .NET PCL, Xamarin.Android, Xamarin.iOS) CLS Library - a super easy, rich and flexible mathematical expression parser (expression evaluator, expression provided as plain text / strings) for JAVA and C#. Main features: rich built-in library of operators, constants, math functions, user defined: arguments, functions, recursive functions and general recursion (direct / indirect). Additionally parser provides grammar and

• SoulverCore

  2 806 6.6 Swift

  A powerful Swift framework for evaluating natural language math expressions

  

• gval

  2 696 0.6 Go

  Expression evaluation in golang

  

• bcal

  12 618 4.4 C

  :1234: Bits, bytes and address calculator

• Flee

  2 587 0.0 C#

  Fast Lightweight Expression Evaluator

• ExprTK

  10 566 0.0 C++

  C++ Mathematical Expression Parsing And Evaluation Library https://www.partow.net/programming/exprtk/index.html

• GoRules

  8 563 8.8 Rust

  GoRules is business friendly Open-Source Business Rules Engine (BRE) to execute decision models according to the JSON Decision Model (JDM) standard. It is written in Rust and provides native bindings for NodeJS and Python. (by gorules)

  

  Project mention: 🚀 GoRules Zen Engine: Rules Engine for Node.js | /r/node | 2023-06-20

• ExpressionEvaluator

  4 562 4.9 C#

  A Simple Math and Pseudo C# Expression Evaluator in One C# File. Can also execute small C# like scripts

• RulesEngineEditor

  2 340 3.1 C#

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

• NCalc2

  2 150 6.9 C#

  expression evaluator for .NET with built-in compiler

  Project mention: What did you learn that was a "game changer" for your development journey? | /r/gamedev | 2023-04-28

  Code as data. Libraries like NCalc2 let you define arbitrary functions as data, which is great for procedurally generated content.

• matex

  1 104 10.0 PHP

  PHP Mathematical expression parser and evaluator

• booleval

  1 81 0.0 C++

  Header-only C++17 library for evaluating logical expressions.

• string-math

  1 39 6.4 C#

  Evaluates a math expression from a string. Supports variables and custom operators.

• go-exprtk

  0 37 0.0 Go

  Go Mathematical Expression Toolkit. Run-time mathematical expression parser and evaluation engine.

• ltext

  0 36 7.2 Haskell

  λtext - higher-order file applicator

  

• java.math.expression.parser

  2 35 6.1 Java

  java math expression parser is faster than JEP

• SaaSHub

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expression-evaluator related posts

• What did you learn that was a "game changer" for your development journey?
  1 project | /r/gamedev | 28 Apr 2023
• Is there a c# library available that will evaluate arithmetic string such "5+3+max(3)" in runtime say from a file and provide output
  6 projects | /r/csharp | 8 Apr 2023
• Build your own agents which are controlled by LLMs
  4 projects | news.ycombinator.com | 4 Apr 2023
• parsing strings for calculation
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• [OC] Options for Runtime (Dynamic) Scripting for .NET [C#, Scripting, Modding]
  5 projects | /r/GodotCSharp | 15 Jan 2023
• Is there any easy way to call a variable through a string?
  4 projects | /r/csharp | 22 Oct 2022
• Evaluate piecewise functions in VBA
  1 project | /r/vba | 17 Oct 2022
• A note from our sponsor - WorkOS
  workos.com | 18 Apr 2024

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