Browse free open source Calculators and projects for Windows below. Use the toggles on the left to filter open source Calculators by OS, license, language, programming language, and project status.

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  • 1
    Gryptonite

    Gryptonite

    Cross-platform encrypted password and file database

    A user-friendly, cross-platform utility for managing and accessing your most secret data. It stores passwords and whole files, so it can literally store any information you want to keep secret. Access your most-used passwords/URLs right out of a desktop tray icon. For advanced users, it includes a separate utility called Grypto-Transforms, which has a universal hash calculator with all the major hash functions, generic encrypt/decrypt functions and a base64/hex converter. It's not just easy to use, it's also highly secure. Security experts will be happy to know that it uses AES with CCM and has a solid security concept.
    Downloads: 23 This Week
    Last Update:
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  • 2
    Position Sizer

    Position Sizer

    Risk-based position size calculation tool with extra features

    Position Sizer is a utility panel for MetaTrader 4 and MetaTrader 5 platforms that lets you easily calculate position sizes for trades based on risk tolerance, stop-loss, account size, and the current market conditions. It can be configured and customized in multiple ways: https://www.earnforex.com/metatrader-expert-advisors/Position-Sizer/
    Downloads: 25 This Week
    Last Update:
    See Project
  • 3

    Logic Calculator

    A Calculator to perform logical operations

    The Logic Calculator is an application useful to perform logical operations. It has three modes: (1) Evaluation of logic formulae: In this mode we have the basic boolean operations (negation, conjunction, disjunction, conditional and biconditional) so the user can insert the logic formula and the Logic Calculator displays the truth table along with the models of the formula. (2) Logical entailment: In this mode the user can insert a number of premises followed by a number of conclusions, so the Logic Calculator displays the truth table of each premise / conclusion and the result of whether or not these premises logically entail the given conclusions. (3) Conversion of a formula to Disjunctive Normal Form (DNF) and Conjunctive Normal Form (CNF): In this mode the user inserts a logic formula and the Logic Calculator outputs its representation in both a DNF and CNF.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 4
    Gryptonite (formerly GPassword Manager)

    Gryptonite (formerly GPassword Manager)

    Simple but Powerful, Cross-Platform Password Management Utility

    A simple but powerful cross-platform utility for managing and accessing your most secret data. It stores passwords and whole files, so it can literally store any information you want to keep secret. Access your most-used passwords/URLs right out of a desktop tray icon. For advanced users, it includes a separate utility called Grypto-Transforms, which has a universal hash calculator with all the major hash functions, generic encrypt/decrypt functions and a base64/hex converter. Although the interface is simple and intuitive, the security is top-notch. It uses AES with CCM to secure and authenticate the data.
    Downloads: 2 This Week
    Last Update:
    See Project
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    Forex Assistant

    Forex Assistant

    Manage accounts, analyze trades, track strategies & stats , News & Cal

    Forex Assistant is a comprehensive Windows desktop application designed to support forex traders in every aspect of their trading journey. From essential trading calculators and market insights to powerful account and trade management, it brings everything you need into one intuitive platform. 🔑 Main Features 🧮 Calculator Tools Profit/Loss Calculator Currency Converter Position Size Calculator Pips Calculator Margin Calculator 🌍 Market Insights Live Market News Economic Calendar 📊 Account Manager Add multiple trading accounts with balance and custom descriptions. Track current balance, profit/loss, and drawdown (daily and total). Add and manage positions manually with full details: entry price, stop loss, take profit, volume, PNL, and notes. Add notes for every trade: describe the strategy used, whether the trade was emotional or technical. Import historical trades directly from MetaTrader HTML reports. 📈 Trade Analysis & Insights
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    Downloads: 5 This Week
    Last Update:
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  • 6
    Neptune

    Neptune

    A calculator like programming language

    Neptune is a simple programming language indented for quick mathematical calculations, e. g. shape field calculation or budget analysing.
    Downloads: 4 This Week
    Last Update:
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  • 7

    CalC++

    C++ Calculator with easy and function divided code!

    CLI Calculator. Readable code. Function divided, can add, substract, divide, multiplicate and calculate tips Try It or Download the Code and build your own
    Downloads: 3 This Week
    Last Update:
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  • 8
    Based on the Swipe Toolkit, Data Calculator lets you know what your information is worth on the open market. Your information is valuable - don't give it away!
    Downloads: 2 This Week
    Last Update:
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  • 9
    STEMCalc IV - Mathematics Swiss Knife

    STEMCalc IV - Mathematics Swiss Knife

    The Fourth Edition of STEMCalc and the biggest one yet!

    +++DISCLAIMER+++ The project is still currently in beta, thus have bare functionality, and possible bugs. Anyone who can spare time and lend a helping hand as a beta-tester is very appreciated. Contact the author for more information. +++INTRO+++ STEMCalc IV is a simple, yet powerful, console-programmed calulator written in Java, performing one calculation with two numbers max at a time and other various functions. +++STORY+++ This is the fourth edition of the previously abandoned student project STEMCalcR. The project has never seen the light of day due to various bugs and lack of usability, even after attempts at reviving the project in the forms of STEMCalcR2 and R3Boot editions. Determined, not giving up, me, one of the original co-authors of STEMCalcR, has brought to you STEMCalc IV, the swiss knife of mathematics. I am determined to drive this project further, turning it into a powerful program , more than just your average calculator.
    Downloads: 1 This Week
    Last Update:
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  • 10
    CalcuFp

    CalcuFp

    Programmable Calculator (IP functions, create user functions)

    New version: 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.
    Downloads: 0 This Week
    Last Update:
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  • 11
    Climate Equity Reference Calculator
    This project implements calculations for the Climate Equity Reference Project's Calculator (CERc).
    Downloads: 0 This Week
    Last Update:
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  • 12
    Codex - Development Kit
    Codex is a series of tools aimed at developers to make certain tasks painless and easier. Tools currently include: Clipboard History AES Encrypter Resolution Emulator FTP Client Image Converter Various IP Tools
    Downloads: 0 This Week
    Last Update:
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  • 13
    D&D HP Monster Calculator

    D&D HP Monster Calculator

    Keep track of all your monsters during your encounters in a simple way

    Allows you to quickly manage the HP of multiple monsters as well as keep quick notes about the monsters!
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    Joda-time based utility Java class that allows calculation related to downtimes. You set a list of downtimes (date-time intervals), and the calculator will give you the ending date-time of a duration, and uptime between two points in time, too.
    Downloads: 0 This Week
    Last Update:
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  • 15
    Engineering Calculator Suite
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    ICalc

    ICalc

    Easy, quick and useful calculator.

    Easy, quick and useful calculator. Lighter enough for quick calculations and powerful enough to provide the most complicated computations.
    Downloads: 0 This Week
    Last Update:
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  • 17

    ObjectLab Kit

    We MOVED to GITHUB!

    http://github.com/Appendium/objectlabkit A set of modules to handle common financial functions. The first module is Date Calculator which handles holidays and weekends. A set of rules are implemented to deal with days falling on a holiday: Forward, Backward, Modified Forward, Modified Backward New FX Rate Calculators
    Downloads: 0 This Week
    Last Update:
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  • 18

    OntoMetriCalc

    A Java API for measuring OWL ontologies

    OntoMetriCalc (Ontology Metrics Calculator) is a Java API for measuring OWL ontologies based on Jena.
    Downloads: 0 This Week
    Last Update:
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  • 19

    Perimeter Area Volume etc. Calculator

    A simple geometry calculator.

    A simple geometry calculator.
    Downloads: 0 This Week
    Last Update:
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  • 20
    Pocket Calculator is a free, open-source alternative to Windows Calculator.
    Downloads: 0 This Week
    Last Update:
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  • 21
    Smart Calculator is beautifully designed, having both standard and scientific modes of calculations. It is built to run anywhere, as its written completely in Java. It featured different types of Look and Feels, using Java's Swing PLAF library.
    Downloads: 0 This Week
    Last Update:
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  • 22
    A calculator with C-style syntax and many features, like functions, braching and arrays. It's a small programming language that can be executed on VM or compiled to x86 code and run natively.
    Downloads: 0 This Week
    Last Update:
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  • 23

    Training Calculator

    Money or level calculate

    If you add level to program, the program push How much money, but if you add money to program push how much can level up. 3.0 TraniningCalculator.zip 2.0: TraningCalcForm.zip UPDATE (3.0 VERSION): - Add new languages (german and slovak) - Add gold calculate (to training) - euphemism
    Downloads: 0 This Week
    Last Update:
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  • 24
    Helps you to verify the integrity of the files. Hash Calculator for files. Using: CRC32 MD5 RIPEMD-160 SHA-1 SHA-256 SHA-384 SHA-512 Update: Added CRC32 Now supports big files (more then 4Gb) *Requires .NET 4.5
    Downloads: 0 This Week
    Last Update:
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  • 25

    spCalculator

    Simple Calculator For Programmer

    Simple Calculator For Programmer. Convert And Find Solution For Basic Arithmetic Operations For Different Bases[2,8,10,16] Need .NET 4.0
    Downloads: 0 This Week
    Last Update:
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