calculations

spatie/period

Complex period comparisons

davidguttman/react-pivot

React-Pivot is a data-grid component with pivot-table-like functionality for data display, filtering, and exploration.

azuyalabs/yasumi

The easy PHP Library for calculating holidays

soulverteam/SoulverCore

A powerful Swift framework for evaluating natural language math expressions

codingseb/ExpressionEvaluator

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

tiffany352/rink-rs

Unit conversion tool and library written in rust

Proektsoftbg/Calcpad

Free and open source software for mathematical and engineering calculations.

TheComet/ik

Minimal Inverse Kinematics library

EarnForex/PositionSizer

Calculate your position size based on the risk and account size and execute your trades with this free MetaTrader expert advisor.

A-gambit/CSS-IN-JS-Benchmarks

Yet-Zio/yetCalc

Yet another calculator designed and developed for Android

IndEcol/pymrio

Multi-Regional Input-Output Analysis in Python.

mgreminger/EngineeringPaper.xyz

EngineeringPaper.xyz is a web app that makes it easy to create, save, and share engineering calculations.

Sibyx/phpGPX

Simple library for reading and creating GPX files written in PHP.

tfsaggregator/tfsaggregator

A server side plugin for Team Foundation Server (TFS) and Azure DevOps Server for performing various Work Item related calculations, create new Work Items and Links automatically.

NikitaGordia/Cosin

Android loading view library 📊🍭

cbailiss/pivottabler

Create Pivot Tables natively in R

engineerjoe440/ElectricPy

Electrical Engineering Formulas in Python

madebybob/php-number

Deal with numbers the right way in PHP

abhimanyu003/qubit

A handy calculator, based on Rust and WebAssembly.

dizzib/earthcalc

This app calculates how much a distant object is obscured by the earth's curvature.

udivankin/sunrise-sunset

Sunrise and sunset time calculation for given coordinates. ~1kb minified with zero dependencies.

spatie/tax-calculator

A set of interfaces and methods to clean up your application's tax calculations

Binondi/Calculator-Hide-Files

Best Application To Hide Your Private Photos, Videos, Audio and other Documents. It is easy to use and simple application with Stock Android Based Theme with Material You Support.

KvanTTT/MathExpressions.NET

:heavy_division_sign: Library for parsing math expressions with rational numbers, finding their derivatives and compiling an optimal IL code

ellykits/neat-form

Build form on Android using JSON schema; also includes view validation and skip logic.

ashikahmad/PrayerTimes-Swift

Islamic Prayer (salah) Time calculation written in swift.

terryyz/PyArmadillo

PyArmadillo: an alternative approach to linear algebra in Python

tmteam/NFun

Expressions Evaluator for .NET

alexeygrek/stl-calc

Simple and available way to calculate the cost of 3D printing STL model. Analysis of 3D models. STL format.

calculang/calculang

calculang is a language for calculations 🧮💬👩‍💻

K1DV5/docal

Do calculations and automatically insert them into your document

MadsKirkFoged/EngineeringUnits

Working with units made easy with automatic unit-check and converting between units

hosseinmoein/Lynx

Light weight dependency graph for systems with massive calculation complexities or scheduling systems

stevecalderone/Chemical-Engineering-Thermodynamics

User Defined Functions for multi-component thermodynamic calculations of the Predictive Peng-Robinson 1978 Equation of State. Clean VBA functions - no UI changes and no pop up messages. Errors are reported in cell comments. Import Math.bas, ModArraySupport.bas and ChemE_Functions.bas into PData.xlsx and save as xlsm or simply download PData.xlsm.