Browse free open source Billing software and projects below. Use the toggles on the left to filter open source Billing software 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.

    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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  • Enterprise-grade ITSM, for every business Icon
    Enterprise-grade ITSM, for every business

    Give your IT, operations, and business teams the ability to deliver exceptional services—without the complexity.

    Freshservice is an intuitive, AI-powered platform that helps IT, operations, and business teams deliver exceptional service without the usual complexity. Automate repetitive tasks, resolve issues faster, and provide seamless support across the organization. From managing incidents and assets to driving smarter decisions, Freshservice makes it easy to stay efficient and scale with confidence.
    Try it Free
  • 1
    Fakturama - Invoicing Made Easy

    Fakturama - Invoicing Made Easy

    The Open Source Invoice Management Software

    Fakturama is an open-source software solution designed for enterprises for creating invoices, as well as delivery notes, while managing and editing your online web shop. Fakturama was especially created in order to provide a comprehensive invoicing program that is compatible with office suites used worldwide, like LibreOffice and Apache OpenOffice. Fakturama makes it easy to create invoices, manage products, contacts, documents, payments, shippings, VATs and all the other constituents of a web shop.
    Downloads: 9 This Week
    Last Update:
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  • 2
    secret project for my mamma
    Downloads: 0 This Week
    Last Update:
    See Project
  • 3
    LedgerSMB

    LedgerSMB

    Building High Quality ERP and Accounting Software for SMB & SME

    LedgerSMB is an ERP, featuring accounting (including AR, AP, and GL), quotation and order management, and more, for businesses with small to medium transaction volumes. The system has been shown to easily handle thousands of AR/AP transactions per week. Data integrity, security, quality, and responsiveness are key values for our community, both among the developers and, we hope, the users. Additionally we aim to make LedgerSMB into a platform to integrate with, or even serve as a framework for building, other applications. We highly value community contributions and aim to stimulate growth through a broad community by actively providing support and documentation.
    Downloads: 0 This Week
    Last Update:
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