http://www.argentuminvoice.com/ open source client-management and invoicing software
ArgentumInvoice: Free, Open Source, Online Project Management & Invoicing SoftwareMarch 9, 2010 · client, for:collidr, invoicing, management, opensource, php, software, time, web · 1 minhttp://www.argentuminvoice.com/open source client-management and invoicing software