Math Parser: Java, C#, C++, Kotlin, Android, and all .NET platforms (Nuget, Maven, CMake). Supports .NET Framework, .NET Core, .NET Standard, Xamarin, and more. Features: rich built-in library of math functions, operators, constants. Flexible in user-defined arguments, functions. Expressions provided as plain text. Easy to use. Well documented.

Javascript Library parsing Excel Formulas and more

Parse and evaluate MS Excel formula in javascript.

Go Language Microsoft Excel™ Formula Parser

Tiny recursive descent expression parser, compiler, and evaluation engine for math expressions and spreadsheet formulas in C++.

Simple math expression parser library for Unity

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

Evaluate C# Formulas at Runtime

Parses, and hovers math formula of c mathematical library functions

Fast low memory consuming mathematical evaluation without endless string parsing! Parses string formula once and uses its object sequence in each evaluation. Moreover, provides user defined functions and variables.

GPU-accelerated math function graphers in web browsers, both 3D and 2D.

redefine flow chart, data + formula will make everything you want

Mathpaqs: a collection of mathematical packages in pure Ada

Actively maintained on https://gitlab.com/ixion/ixion instead. This one is just a mirror.

Dynamic Generation and Quality Checks of Formula Objects

A multi-platform, sandboxed and extendable expression language with a Python-like syntax.

CalculationEngine is a useful tool for calculating complex formulas.

Java-библиотека для вычисления Excel-формул.

A parser for text-entry maths that will eventually go into https://isaacphysics.org/equality

Analytical formulas: построение аналитических формул с помощью генетического алгоритма.