BillingBoss: Free Web Based Invoicing Site
BillingBoss is a free web based invoicing site for freelancers and small business owners. It enables you to easily create professional looking invoices, send them online and track everything in one place. You can add PayPal or merchant account details so your customers can pay online.
The site presets data on a clean multi-tabbed interface with all your invoices nicely organized (past, due, outstanding, paid and draft). Other features like setting reminders, generating reports and sharing data are also provided.

See BillingBoss demo video below:
Features:
- Create, send and organize your invoices online.
- Easily keep track of past, due, outstanding, paid draft invoices.
- Lets you set email reminders.
- Generate reports, and easily share data with your accountant.
- The application is available in 14 different languages.
- Clean tabbed interface.
- Free and easy to use.
- Similar websites: CurdBee, Invoice Journal and InvoicePlace.
Check out BillingBoss @ www.billingboss.com



Signed up. Easy to use.
Very limited in colour and template choice so I hope you like green !.
Does the job.