OpenSourceBilling is described as 'Simple web application to create and send invoices, receive payments, manage clients and companies. It generates reports of Item sales, payments, and collected revenues. It supports multi languages and multi currencies' and is an app in the business & commerce category. There are more than 50 alternatives to OpenSourceBilling for a variety of platforms, including Web-based, Mac, iPhone, Windows and Android apps. The best OpenSourceBilling alternative is Invoice Ninja, which is both free and Open Source. Other great apps like OpenSourceBilling are Manager, Akaunting, InvoicePlane and FreshBooks.