Free and Open Source Invoicing, Expenses & Time-Tracking
Free Desktop book-keeping software for small-businesses & freelancers
Empower your hosting business with FOSSBilling
Open Source Metering and Usage Based Billing API
Easy to use, modern and reliable POS solution.
Accounting system for smaller companies written in GnuCobol.
Linux-Based Billing And Business Application Server For FREE use.
Free & Open Source Invoice App for Freelancers & Small Businesses
A super simple way to create & send invoices, receive payments online
The Open Source Invoice Management Software
Mutasyon is a script can add customer, products, inventory or invoice
Captures time & expense by project and account; generates invoice
Intuitive quote, delivery note, invoice, payments management app
Free web-based invoicing primarily for Finnish companies
Online invoicing, online invoicing solution, web-based invoicing