Free and Open Source Invoicing, Expenses & Time-Tracking
Laravel Cashier provides an expressive, fluent interface to Stripe
Free & Open Source Invoice App for Freelancers & Small Businesses
Small Business Appliance
Invoice and office utilities program for customer managment
its complete accounting system for small scale manufacturing companies
Open Source Invoice Programm for Egroupware
Mutasyon is a script can add customer, products, inventory or invoice
Captures time & expense by project and account; generates invoice
A complete invoice managment solution for Elastix PBX
Intuitive quote, delivery note, invoice, payments management app
Free web-based invoicing primarily for Finnish companies
Online invoicing, online invoicing solution, web-based invoicing