Free and Open Source Invoicing, Expenses & Time-Tracking
Empower your hosting business with FOSSBilling
Linux-Based Billing And Business Application Server For FREE use.
A basic PHP/MySQL/HTML Billing APP. Meant for developers learning.
Small Business Appliance
Mutasyon is a script can add customer, products, inventory or invoice
Free Web Host Billing System
Free web-based invoicing primarily for Finnish companies