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

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  • 1
    Free Invoicing Software for 2025

    Free Invoicing Software for 2025

    Simple Invoicing program for Desktop written in vba and Access

    This is a learning/sample/functional Invoicing program written in vba and MS-Access. It is for a small, or personal, business. It should give you practice in learning/use of Invoicing, and installing on the desktop, and programming in vba and MS-Access. Note that the free MS-Access Runtime is with the download . You need MS-Access if you want to work with the program code or print reports (part of Office 365). The program processes Invoicing and Quotes, and produces reports for A/R, Inventory and Accounting Purposes. Read the readme file, and manual for greatest use of this App. This is an upgrade to MSFrnd2a. The application can now produce a Revenue Graph, you can add Inventory on the Invoice, and print mail labels. The MS-Access Runtimes for 32/64 bits are included. The ZIP file contains all program code, and program elements needed to work on. Find other free programs at: https://gotomarcus.com/main/marcus/index.php or gotomarcus.com/currentswms/index.php
    Downloads: 15 This Week
    Last Update:
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  • 2
    Multiplatform webbased timereporting system. Generic database support (MS SQL, MySQL...). Generate reports on employees, worked hours in projects. Automatically generate invoices based on an hourly fee (by employee). Gant charts for planning resources
    Downloads: 2 This Week
    Last Update:
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  • 3

    L-invoice - Online Invoicing Solutions

    Online invoicing, online invoicing solution, web-based invoicing

    L-invoice.com is based on MyClientBase - an online invoicing solution. We provide pay-per-use hosted invoicing solution, that is quick and easy for you to generate quotations and invoices. We're looking at improving it further, to deliver added values, other than basic features that has already offered. Visit us at http://L-invoice.com for more details. Have fun with L-invoice, your quick and easy invoicing solution.
    Downloads: 0 This Week
    Last Update:
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