Easily create attractive invoices
Send invoices to clients by email
Print-out invoices to mail to clients
Save invoices as PDFs
Create invoices with charges for time and services/products on the same bill
Create quotations and easily convert these to invoices when necessary
Subscribe to your invoices with RSS
Export your data for use in desktop spreadsheet applications
Intuitive interface which acts more like a desktop app than a web-page
Send reminders and thank-you messages to clients
Keep track of payments you've received
Get email alerts when invoices become overdue
Customise the look of your invoices or use one of many pre-designed templates
Tag your invoices to find out which types of invoices you send the most, and which are for the most money
Set up recurring invoices to save you time and make sure you get paid