Simple Invoices is a simple web based invoicing solution for personal/home-office/small business needs. Simple Invoices offers the basic option to enable people to create and manage invoicing. Refer: http://www.simpleinvoices.org for more info
Does just what it says it does. The best invoicing set up for sole traders and small business.
Works like a treat. Plenty of doco. Development is really moving forward. Great project idea. Great project. Opportunites to get involved and help out if you wish.