If you're a small business looking for an easy way to store and manage invoices online, Invotrak could be the solution you are after. This simple online solution lets users input, track and issue invoices to clients. Its simple and straightforward navigational structures and tracking features make this an effective way to track past due invoices, and incoming revenue without using complicated software.

There aren't many steps involved in setting up a profile and getting up and running:

• Create a login
• Add client information - client name, contact name, address, email, and notes.
• Record invoice - select client from dropdown, set date, amount, term, and upload an invoice from your standard application like word or excel.
• Enter any invoice comments
• Email to client

Through the user interface, companies can then track what invoices are out and waiting to receive payment on. When payment comes in, a simple click drops the payments to the received category, and adjusts balances in the right column.

The service was created by Draconis Software using Ruby on Rails to manage and keep track of their own invoices. Draconis says that they make every precaution to ensure information that is stored under your profile is secure. That's always great to know, but what happens if something goes wrong? Or, knock on wood worse case scenario, Draconis goes out of business? What happens to our information then? That's the main concern I always have when storing my data online. You can't get much simpler than Invotrak though, however, we would like to see a way to export information to a spreadsheet application for desktop storage purposes.

Mac users, check out the Dashboard widget so you can easily catch a glimpse of your invoices.

For another simple invoice option look at Freshbooks.

The Invotrak service is free, and super easy to use. Check out some screenshots of the interface.