Browse free open source Python Calculators and projects below. Use the toggles on the left to filter open source Python 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

    The database for AI-powered applications.

    MongoDB Atlas is the developer-friendly database used to build, scale, and run gen AI and LLM-powered apps—without needing a separate vector database. Atlas offers built-in vector search, global availability across 115+ regions, and flexible document modeling. Start building AI apps faster, all in one place.
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  • 1
    A tool for Spellcrafters and their customers playing Mythic Entertainment's MMPORG, Dark Age of Camelot
    Downloads: 12 This Week
    Last Update:
    See Project
  • 2
    D20 Calculator is a graphical roller for a d20 based RPG. The program recognizes commonly used expressions such as "3d8+4", rolls, totals, and displays the results in a detailed, yet easy to read format.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 3
    ELOcalc is a small GUI/command-line calculator designed to calculate ELO scores (for, e.g., chess).
    Downloads: 0 This Week
    Last Update:
    See Project
  • 4

    Sojourner's Encounter Calculator

    Simple calculator to help with the creation of D&D 5E encounters.

    This is a simple tool intended to be used during the creation of D&D 5E encounters. It is designed to be used in conjunction with the Monster Manuel and follows the encounter guidelines described in the Dungeon Masters Guide.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Level Up Your Cyber Defense with External Threat Management Icon
    Level Up Your Cyber Defense with External Threat Management

    See every risk before it hits. From exposed data to dark web chatter. All in one unified view.

    Move beyond alerts. Gain full visibility, context, and control over your external attack surface to stay ahead of every threat.
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  • 5
    Inspired by the movie "Number 23". I've written a python program who calculates the sum of a string and he puts out a message if the sum has anything to do with the number 23. http://creativecommons.org/licenses/GPL/2.0/
    Downloads: 0 This Week
    Last Update:
    See Project
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