Browse free open source Billing software and projects for Linux below. Use the toggles on the left to filter open source Billing software by OS, license, language, programming language, and project status.
Free Desktop book-keeping software for small-businesses & freelancers
Open Source Integrated Hospital Information Management System
Open Source Metering and Usage Based Billing API
Free and Open Source Invoicing, Expenses & Time-Tracking
Easy to use, modern and reliable POS solution.
Imagic Solution Easy to Use Windows Based Weighbridge Software
Empower your hosting business with FOSSBilling
Open Source Openbravo POS convert to Commercial Retail ERP and POS
Free & Open Source Invoice App for Freelancers & Small Businesses
The Open Source Invoice Management Software
A super simple way to create & send invoices, receive payments online
Simple and elegant invoicing solution
Accounting system for smaller companies written in GnuCobol.
jBilling is a web-based enterprise billing system.
Baraza Business Management System, a product of Openbaraza
Accounting, invoicing, inventory and payroll software for Linux
Captures time & expense by project and account; generates invoice