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

  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

    The database for AI-powered applications.

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  • The All-in-One Commerce Platform for Businesses - Shopify Icon
    The All-in-One Commerce Platform for Businesses - Shopify

    Shopify offers plans for anyone that wants to sell products online and build an ecommerce store, small to mid-sized businesses as well as enterprise

    Shopify is a leading all-in-one commerce platform that enables businesses to start, build, and grow their online and physical stores. It offers tools to create customized websites, manage inventory, process payments, and sell across multiple channels including online, in-person, wholesale, and global markets. The platform includes integrated marketing tools, analytics, and customer engagement features to help merchants reach and retain customers. Shopify supports thousands of third-party apps and offers developer-friendly APIs for custom solutions. With world-class checkout technology, Shopify powers over 150 million high-intent shoppers worldwide. Its reliable, scalable infrastructure ensures fast performance and seamless operations at any business size.
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  • 1
    PeaZip

    PeaZip

    Free Zip software and Rar extractor

    PeaZip is a free archiver tool. The application provides an unified, natively portable, cross-platform file manager and archive manager GUI for many Open Source technologies like 7-Zip, FreeArc, PAQ, UPX. Create: 7Z, ARC, Brotl, BZip, GZip, PEA, TAR, WIM, XZ, ZPAQ, ZIP, Zstandard files and more Open and extract 200+ file types: ACE, CAB, DEB, ISO, RAR, ZIPX and more Features of PeaZip includes extract, create and convert multiple archives at once, create self-extracting archives (sfx), split files, strong encryption with two factor authentication, encrypted password manager, secure deletion, find duplicate files, calculate hashes, export task definition as command line script.
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    Downloads: 1,643 This Week
    Last Update:
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  • 2
    TeemIp - IPAM and DDI solution

    TeemIp - IPAM and DDI solution

    IP Address Management - CMDB - Ticketing - DNS and Zone Management

    TeemIp is a free, open source, WEB based, IP Address Management (IPAM) tool that provides comprehensive IP Management capabilities. It allows you to manage your IPv4, IPv6 and DNS spaces: track user requests, discover and allocate IPs, manage your IP plan, your subnet space, your zones and DNS records in accordance with best in class DDI practices. At the same time, TeemIp's CMDB allows you to manage your IT inventory and links your CIs to the IPs they use. Project source code is located on https://github.com/TeemIP
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    Downloads: 120 This Week
    Last Update:
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  • 3
    BigAl

    BigAl

    a free cross platform calculator for calculating BIG numbers

    BigAl is a free open source and platform independent software for calculating really BIG numbers. It supports not only standard arithmetic, but also exact period determination, predefined factorials, fibonacci with seeds, factorization, nth root, etc
    Downloads: 6 This Week
    Last Update:
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  • 4

    Time and Date Calculator

    Simple calculator that can handle dates and time.

    Goal of this project is, creating a calculator that can handle all date and time operations that a user may need. You can operate with milliseconds as months, years or dates. Examples: 2013-11-25 + 3d => 2013-11-28 2013-11-25 - 2013-10-20 => 36d 1h 5h + 6h => 11h 1382220000t => 2013-10-20
    Downloads: 2 This Week
    Last Update:
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  • Simple, Secure Domain Registration Icon
    Simple, Secure Domain Registration

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  • 5
    Triangolo

    Triangolo

    Liothyronine dosage calculator

    Calculator software helping to determine L-T4 and L-T3 substitution dosage according to the algorithms provided by the European Thyroid Association (ETA).
    Downloads: 1 This Week
    Last Update:
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  • 6
    The BE-Calculator is a Java application, written to ease the average diabetic's life. It currently only calculates how many I.U. you have to inject, but aims at providing a full, multilingual diabetic's diary. This project has been superseded by GGC!
    Downloads: 0 This Week
    Last Update:
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  • 7
    Baculator is a Reverse Polish Notation (RPN) calculator program with an infinite scrollable stack and support for most common mathematical operations as well as some more esoteric operations. Available for Unix/Gtk+, Mac OS X, and MS Windows.
    Downloads: 0 This Week
    Last Update:
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  • 8
    Cocktail Alcohol Calculator is a little tool for a barmiss or a bartender to calculate the amount of alcohol in a cocktail or another mixed alcoholic drink.
    Downloads: 0 This Week
    Last Update:
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  • 9
    HÜJEK-Calc
    A Command line calculator, written in C++. It using a tree structure to represent and solve a math problem. This tree is also visualized on the console window.
    Downloads: 0 This Week
    Last Update:
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  • Connect every part of your business to one bank account Icon
    Connect every part of your business to one bank account

    North One is a business banking app that integrates cash flow, payments, and budgeting to turn your North One Account into one Connected Bank Account

    North One is proudly built for small businesses, startups and freelancers across America. Make payments easily, keep tabs on your money and put your finances on autopilot through smart integrations with the tools you’re already using. North One was built to make managing money easy so you can focus on running your business. No more branches. No more lines. No more paperwork. Get complete access to your North One Account from your phone or computer, wherever your business takes you. Create Envelopes for taxes, payroll, rent, and anything else automatically.
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  • 10
    JCalc is a large Calculator written in Java. It support the standard basic opations (+,-,*,/) and the scientific calculator (sin, cos, tan, sqrt, ...). Calculate and translate with the different numbering systems. And it can solve simple equations.
    Downloads: 0 This Week
    Last Update:
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  • 11
    Stevi's PocketCalculator (german: Stevi's Taschenrechner) is a simpel pocket calculator.
    Downloads: 0 This Week
    Last Update:
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  • 12
    A basic loan/credit calculator written in qt 4.x for linux but could also be ported to windows/mac.
    Downloads: 0 This Week
    Last Update:
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  • 13
    This is a simple calculator for the Xhodon browser game. At the moment, the application is only available in German and the calculations are for the "Elfwelt" Server only. The application needs the latest JRE (http://www.java.com) If there additional f
    Downloads: 0 This Week
    Last Update:
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  • 14
    Web-based nutrition calculator for adult intensive care patients (for enteral and parenteral nutrition).
    Downloads: 0 This Week
    Last Update:
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  • 15
    Two full-fledged object-oriented classes dealing with dates (class cDate) and spans of time (class cPeriod) written in C++. The datecalc-cpp project is a sub-project of tbvs-hr (https://sourceforge.net/projects/tbvs-hr).
    Downloads: 0 This Week
    Last Update:
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  • 16
    Two full-fledged classes dealing with dates (class cDate) and spans of time class cPeriod) written in PHP. The datecalc project is a sub-project of tbvs (http://sourceforge.net/projects/tbvs).
    Downloads: 0 This Week
    Last Update:
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  • 17
    pafcalc

    pafcalc

    DIY fertilizers calculator for planted acquariums

    This tool allows you to perform some calculations related to DIY and dosing fertilizers in planted aquariums.
    Downloads: 0 This Week
    Last Update:
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