FreshBooks

FreshBooks, the leader in online invoicing, helps professionals in over 100 countries save time, get paid faster, look professional and focus on what they love to do — their work. Since 2004, the company has helped more than 2.5 million users create, send, print and pay invoices online, taking the pain out of billing and bookkeeping. FreshBooks users are served by a tight-knit team of dedicated individuals based in Toronto, Canada. 

To try uread more about why over 1500 Accountants and Bookkeepers are using and recommending FreshBooks to their small business clients here:
http://www.freshbooks.com/jointhemovement.