Open Source Desktop Operating Systems Calculators

CRC RevEng is a portable, arbitrary-precision CRC calculator and algorithm finder. It calculates CRCs using any of the 113 preset algorithms, or a user-specified algorithm to any width. It calculates reversed CRCs to give the bit pattern that produces a desired forward CRC. CRC RevEng also reverse-engineers any CRC algorithm from sufficient correctly formatted message-CRC pairs and optional known parameters. It comprises powerful input interpretation options. Compliant with Ross Williams' Rocksoft(tm) model of parametrised CRC algorithms.

Precise Calculator has arbitrary precision and can calculate with complex numbers, fractions, vectors and matrices. Has more than 150 mathematical functions and statistical functions and is programmable (if, goto, print, return, for).

The program evaluates ordinal expressions and relations. displaying the normal form output in plain text and/or TeX format. It supports notations for ordinals through and somewhat beyond those definable by the Veblen function.

An open source files hash calculator for Windows and macOS. * MD5, SHA1, SHA256 and SHA512. * Drag & drop. * Integrated with context menu in Explorer/Finder. * Support Windows 7 and later. * Support macOS 11 and later, with universal binary. * Support Dark Mode. * English and Simplified Chinese UI. The icon "希" is from hash in Chinese "哈希".

A real-time financial derivatives calculator supporting 168+ models from QuantLib, Financial Numerical Recipes in C++ and MetaOptions. Matrices of prices are created with iterating strikes and/or months. A strike control system can produce any strike. A generalized date engine can calculate re-occuring distances to any industry used expiration into the future. Spread engine with spread views. Models Supported: Black-Scholes, Merton-73, Black-76, Roll Geske Whaley, Garman KohlHagen, Jump Diffusion, Quanto, Vasicek Bond Option, Turnbull Wakeman Asian, TimeSwitchOption, Look Barrier, Bachelier, PartialTimeBarrier, GapOption, Extreme Spread Option, Simple Chooser, ComplexChooser, PartialFixedLB, Executive, CashOrNothing, Extendible Writer, OptionsOnOptions, BAWAmericanApprox, BSAmericanApprox, AssetOrNothing, Bisection, BAWbisection, BSbisection, Gfrench, Gcarry, Swapoption, Complex Chooser, Super Share, EquityLinkedFXO, Spread Approximation, BinaryBarrier and more

4tH is a Forth compiler with a little difference. Instead of the standard Forth engine it features a conventional compiler. 4tH is a very small compiler that can create bytecode, C-embeddable bytecode, standalone executables, but also works fine as a scripting language. It supports about 95% of the ANS Forth CORE wordset and features conditional compilation, pipes, files, assertions, forward declarations, enumerations, structures, suspended execution, recursion, include files, etc. It comes with an RPN calculator, BASIC interpreter, line editor, preprocessor, compiler, decompiler, C-source generator, a virtual machine, and a multitasking environment.

mathSuite is a very powerful Mathematical Suite which deals principally with complex algebric and geometric operations. It is powered by the fabulous ExprEval C Parser. The main purpose of this project is fast math-oriented algorithm virtualization, with an optimized direct text interface. Also it gives you a very powerful and fast Calculus Environment which let you handle easily interchangeable variable lists, matrices, LOGS and Settings Layouts with optimized Items Lists Managing Engine. You'll also be able to execute your own scriptfiles with a basic math-oriented beta script language. Some feature regarding Matrices and Linear Algebra Operations are LU-Factorization, SVD Decomposition, Rank Calculator, Ill Condition Checking and more... There are also a very powerful Linear System Solver and Basic PRELoaded Functions Integrator Engine.

TRURL is a suite of desktop calculators with reverse Polish notation (RPN) written in Object Pascal. Additionally, it comes with a free reusable class library (RPN Engine) as a toolbox for creating your own calculator. TRURL is an acronym for "TRURL is a Reusable Universal RPN Library". Class Libraries: • RPN Engine: Full-featured calculation engine for Pascal-based RPN calculators • Segmitator: Library for virtual seven-segment displays Applications: • TRURL A: Simple demo app for the RPN Engine • TRURL G: Desktop RPN calculator inspired by the UI of the DSKY unit of the Apollo Guidance Computer (AGC)

SACalc ist ein Rechner für das Browsergame Star-Attack (www.star-attack.de). Er berechnet unter anderem die Anzahl der für einen erfolgreichen Angriff notwendigen Kampf-Schiffe oder die maximalen Kapazitäten von Spionage-Schiffen.

!!! This project is currently CLOSED. There is a new version of API available under LGPL license at https://github.com/gehtsoft-usa/BallisticCalculator1 There is a new version of application in progress (ported to net framework 5.0) https://github.com/nikolaygekht/ballistic.calculator.app Ballisitic Calculator based on JBM's implementation 3-degree of freedom model, ported to C#, improved to support metric system and extended by some math from Litz's "Applied Ballistic" book. Calculator displays ballistic tables, graphs, comparison graph and reticle images. The application is free to use under GNU license

This program has 11 parts for 11 different financial calculations. By this program, you could calculate financial calculations more accurate than normal programs. This program shows large numbers completely rather than in exponential form. However, still there are some limits; for example, very large numbers (more than 10000 digits) cannot be accepted as an input data. Some calculations also cannot be done with even much fewer digits too. It’s because of some limits for some computer calculations. You could translate this program into any language that you prefer. You have to use one of the official languages of this program to know how exactly putting the translation text lines. You could save the result of the calculation into the output file or save it into the database of the program, which is on top of each section. You could change the text color of the output file (except simple text files which cannot have any color).

CalcuFP program is a calculator software (beta version), has a wide range of mathematical functions, specific functions for different subjects (ex.- IPv4 functions), Apart from being able to have on hand an wide range of functions, allows to use different numbering systems WITHOUT CHANGING MODES. We can sum operations decimal, binary and hexadecimal mixed. Example. - 25 + BIN ('111 ') + HEX (' FF ') -> this is equivalent to adding the integer 25 +7 (binary) +255 (hexadecimal) = 287. Allows use of predefined variables and constants. Creating user functions. It has a programming section through type pascal scripts (still in testing), It has a multimedia viewer to store documentation that we have on hand for our daily tasks. Aside calculators comes with color coded for resistors, inductors and capacitors. Support matrix calculation. Solving systems of n equations. Periodic table of elements. QR code generator Create new User functions with pascal script.

Command-line strong encryption tools including: triple cascaded encryptor, multiple hash calculator and multiple block cipher encryptor. Supports AES, Serpent, Twofish, SHA-512, RIPEMD-160, MD5 and other algorithms.

Currently: *Source code now available in the form of a Visual Studio 2015 project (zipped).* 1) Calculate BMI, daily caloric intake, target heart rate, maximum and training poundage, and ideal proportions based upon joint measurements. 2) Record and recall measurements and progress using the Basic Information tab. 3) Create, Manage, Export, and Import custom foods/exercises lists using the appropriate tabs. 4) Store and recall workout and diet log records by date. Future Improvements (in the works): * Diet and Workout tab improved functionality.

(Graphical Edition Released, BreezyCalc: http://breezycalc.sourceforge.net/) Lincalc is a console calculator designed to provide a quick and simple interface to a very powerful engine. Its parser is based on muParser <http://muparser.sourceforge.net/>. It supports user-defined variables, logical operators for conditions, and a wide range of mathematical functions each calculation that is made is stored in a result variable (Ans1, Ans2..) and can be referenced in equations. It also supports evaluation of multiple equations each separated by a ','. Conditional Statements: -- Ex. (condition) ? (true val) : (false val) Logic Operators: -- && (and), || (or) Comparison Operators: -- <= (less than or equal to) -- >= (greater than or equal to) -- < (less than), > (greater than) -- != (not equal to), == (equal to) Functions: abs, exp, sqrt, avg, sum, min, max, sign, rint, ln, log10, log2, sin, sinh, asin, asinh, cos, cosh, acos, acosh, tan, tanh, acos, acosh

Command line molar mass calculator that provides typo checking and options for printing elemental analysis and saving a record of previously calculated molar masses.

A powerfull tool to work with math functions. At this stage of progress it's draw 2D graphs and 3D graphs of any function. Also have very easy to use calculator which can calculate complicate expressions.

kalc is a programmable scientific calculator, using RPN (Reverse Polish Notation). Its behaviour imitates a HP48/HP49 calculator. Works with real and complex numbers, unlimited size integers, arbitrary-precision real numbers and more.

Calculator++ is an Open source Scientific Calculator app designed to replace the standard Calculator app. Currently in MS-DOS Format.

MhcFS2 - engineering calculator. (v. 1.2) (math expression calculator, scientific calculator, numerical, integral,integration, derivative, root, matrix, differencial, differentiation, equation, LSE,ODE )

I apologize for this, but an accident occurred and all of my GeoDash work has been lost. No updates will be coming. To view all of the files available please click on the 'Browse All Files' link under the 'Big Green Download' button above this description.

A Roman Numeral Calculator. Ratio Mercatoris (formerly Ratiocinator) is a calculator program using Roman Numerals. Also, has built-in Financial and Scientific (Ancient Rome) functions.

A simple open source/free software tax calculator written in .NET. It works on Windows and also on Mac and Linux with Wine and Mono. One of the first to be open source and free! :)

latexcalc is a "LaTeX Calculator" that calculates values inside your LaTeX files before typesetting them. More accurately, it preprocesses files written in a superset of the LaTeX typesetting language and evaluates specified expressions in the text.

Calculadora Financiera Básica, una forma de calcular sencilla y de forma precisa para sus cálculos básicos financieros como: Cálculo de Márgenes de Ganancia y la Porcentual (muy utilizadas para la gente común y comerciantes), la depreciación, cálculo del Punto de Equilibrio, cálculo de Tasas de Intereses y Amortizaciones básicas, cálculo del precio total (¡Incluye Estilo factura en Pantalla!)