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.

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

    Build gen AI apps with an all-in-one modern database: MongoDB Atlas

    MongoDB Atlas provides built-in vector search and a flexible document model so developers can build, scale, and run gen AI apps without stitching together multiple databases. From LLM integration to semantic search, Atlas simplifies your AI architecture—and it’s free to get started.
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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
    WP 34s

    WP 34s

    Scientific/engineering firmware repurposing HP business calculators!

    This project has created scientific firmware for the HP-20b and HP-30b business calculators. WP 34S turns either of these calculators into a powerful keystroke programmable scientific device. According to our customers, it's the most powerful and fastest RPN scientific pocket calculator ever built. WP 34S is alive and stable since 2011. We have succeeded in satisfying the most picky users - read about their experiences on http://www.hpmuseum.org/forum/forum-8.html. Since 2014, WP 34S runs in version 3.3. Our customers confirm its documentation is excellent and comprehensive (see feedback); a full-color printed edition is available from https://www.amazon.com/dp/153366238X since 2018-10-15. Alternatively, you can get a personalized pdf-manual for a ≥ 9 US$ donation here. We have also produced the WP 31S which is derived from the WP 34S source code. This is an entry-level scientific calculator. Its printed manual is available from https://www.amazon.com/dp/1499231164 .
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    Downloads: 92 This Week
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  • 4
    CEmu emulator

    CEmu emulator

    Third-party TI-84 Plus CE / TI-83 Premium CE emulator

    Developer-oriented emulator of the eZ80-based TI-84 Plus CE / TI-83 Premium CE calculators. CEmu is a third-party TI-84 Plus CE / TI-83 Premium CE calculator emulator, focused on developer features. The core is programmed in C and the GUI in C++ with Qt, for performance and portability reasons. CEmu works natively on Windows, macOS, and Linux! Easy setup - get running by doing a one-time-only connection of your calculator! Accurate and fast emulation. Customizable speed/throttling. Resizable calculator screen. "Always-on-top" window option. Screen capture (PNG). Screen recording (animated PNG). File sending/receiving (not for Apps/OS yet). Multiple keybinding presets. Emulation states for efficient saving / restoring. Color skins (like the real devices). Available in English, French, Spanish, and Dutch.
    Downloads: 14 This Week
    Last Update:
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  • Simple, Secure Domain Registration Icon
    Simple, Secure Domain Registration

    Get your domain at wholesale price. Cloudflare offers simple, secure registration with no markups, plus free DNS, CDN, and SSL integration.

    Register or renew your domain and pay only what we pay. No markups, hidden fees, or surprise add-ons. Choose from over 400 TLDs (.com, .ai, .dev). Every domain is integrated with Cloudflare's industry-leading DNS, CDN, and free SSL to make your site faster and more secure. Simple, secure, at-cost domain registration.
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  • 5
    This emulator is capable of providing a faithful replication of the HP48. It also has a debugger for the saturn processor.
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    Downloads: 48 This Week
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  • 6
    ReHash is an easy-to-use console-based hash calculation tool written in C++. It supports many algorithms and output formats and it can be fully configured using some of the many command-line arguments which can be passed to the tool.
    Downloads: 10 This Week
    Last Update:
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  • 7
    PTools is a set of useful tools written in Pascal. It includes: scientific calculator, archiver, text editor, remote adminitration and more. It is designed to be portable across operating systems, specially Java-based mobiles, Windows and Unixes.
    Downloads: 5 This Week
    Last Update:
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  • 8
    A simple command to convert calendar dates to julian dates. Quite useful in timing situations where you need elapsed time between dates. Also useful for astronomy applications.
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    Downloads: 9 This Week
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  • 9
    Fx702p

    Fx702p

    A Casio Fx702p handheld-computer emulator

    A fully-featured Casio Fx702p emulator including the calculator mode, a full basic implementation and a original debugger as well as some sample programs.
    Downloads: 2 This Week
    Last Update:
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  • Enterprise and Small Business CRM Solution | Clear C2 C2CRM Icon
    Enterprise and Small Business CRM Solution | Clear C2 C2CRM

    Voted Best CRM System with Top Ranked Customer Support. CRM Management includes Sales, Marketing, Relationship Management, and Help Desk.

    C2CRM consists of four modules that integrate to provide a comprehensive CRM solution: Relationship Management, Sales Automation, Marketing Automation, and Customer Service. Only buy what each user needs.
    Learn More
  • 10
    IPv6SubnetCalc is a comprehensive calculator for IPv6 addresses. It comes with Java Swing GUI and supports the following RFCs: RFC4291, RFC4193, RFC3849, RFC2464, RFC5375, RFC4941, RFC3513, RFC3879, RFC4941, RFC3056, RFC3587, RFC2374, RFC3306, RFC3956.
    Downloads: 1 This Week
    Last Update:
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  • 11
    In vielen Foren sehe ich immer Leute die fragen ob das Netzteil für diese oder jene Hardware ausreicht. Im Internet gibt es viele "Watt-Rechner" die aber leider sehr ungenau arbeiten und meist Netzteile Empfehlen die viel zu groß sind. Deswegen habe ich mir gedacht, Programmiere ich einen Netzteil Calculator der ziemlich genau sein soll.
    Downloads: 1 This Week
    Last Update:
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  • 12
    A quick and easy to use SHA1 calculator for Windows, using C# & .net. (very) Similiar in style to winMD5Sum; supports filenames passed on the command line & files drag+dropped on!
    Downloads: 1 This Week
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  • 13
    This Is A Small Little App I Wrote In Java That Can Calculate CPU Ghz off of the FSB Multiplier and Company(Intended For Overclockers)!
    Downloads: 0 This Week
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  • 14
    A simple IPv4 Address Calculator. It's a free Python module. It's also a core part of the IPeek-GUI wrapper.
    Downloads: 0 This Week
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  • 15
    This is a GUI wrapper for IPeek module (Python IPv4 Address Calculator). This little application can help with day-to-day IP address calculations.
    Downloads: 0 This Week
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  • 16
    The Internet Protocol Address Calculator is an open-source java-based tool. This calculator will assist network administrators to perform calculations over both IPv4 and IPv6 address space. A handy whois search client is also integrated into this tool.
    Downloads: 0 This Week
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  • 17
    MacNetCalc is an IP network/subnet calculator written in Python using the PyObjC bridge and the Cocoa UI. Visually similar to Boson's 'Subnetit'.
    Downloads: 0 This Week
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  • 18
    NetCalcTools

    NetCalcTools

    The network calculator with many tools for IPv4,IPv6

    NetCalcTools 1.5 uses Qt 5 libraries NetCalcTools 1.4 uses Qt 4 libraries IPv4 tools: SUBNET CALC - Calculate subnet,broadcast,host range and so on. ADDRESS CONVERTER - Input IP'll be converted to bin,hex,oct. MULTICAST ETHERNET - Calculation Multicast MAC addresses from Multicast IP addresses ... SUMMARIZATION - Summarization of IP addresses , You'll fill up IP list and program will summarize it. NETWORK DESIGNER - Calculation of subnets for whole network from 1 or multiple input IP addresses. Other tools: MAC INFORMATION - Will show information about MAC such as if it's global/local individual/group IPv6 tools: SUBNET CALC - Basic calc for IPv6 , Subnet,Host range,Max hosts ... MULTICAST CALC - Will show information about Multicast IPv6 address for example R,T,P bits . OPERATIONS - If you need Commpress,expand IPv6
    Downloads: 0 This Week
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  • 19
    Crossplatform utility that calculates network address, broadcast address, etc... by given IP and mask.
    Downloads: 0 This Week
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  • 20

    Subnet Calculator

    A simple tool that performs network math with subnets.

    Given a valid IP address and subnet mask, this program will return the necessary subnetwork data.
    Downloads: 0 This Week
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  • 21
    Tiny Calculator is a command line calculator for developers. It can resolve a complex expression mixing decimal, esadecimal an binary number. The result is automatic converted in decimal, esadecimal ad binary format.
    Downloads: 0 This Week
    Last Update:
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