FreshBooks has an arsenal of features: payment integration with 14 major (and some minor) payment gateways, integration with Basecamp, recurring billing, add your own expenses like food and electrical to see your cost/revenue ratio, and much more.

Customization of your FreshBooks account is almost limitless. You can easily customize your administrator backend, create your own login page, change the colors, logos, etc. on Invoices and timesheets.

They have a customer base of over 400,000 and they saw they’re steadily growing. Reviews from PC World to CNet praises their business approach and customer relationships, turning customers into true fans.

After trying out a free account to write this review, I am strongly considering using FreshBooks for my brother’s and my own business needs. Pricing is very reasonable, but even the free account may be sufficient for your needs. I recommend giving FreshBooks a shot. Sign up for a free account. You’ve got nothing to lose.

Curdbee is one of the few free invoicing applications that allows you to create custom invoices to send to clients via email that also allows for PayPal integration (Also includes Google Checkout integration). Send an invoice to anyone in the world using multiply currency compatibility. Have packages/items you find yourself constantly invoicing for? Create preset “items” that will automatically fill in the Quantity, Description, and Price fields with the click of a button. The very simple and sleek admin interface makes it a breeze to navigate through.

Although invoicing reports is currently not a feature, I am seriously considering using Curdbee for all my freelancing projects.

In conclusion, Curdbee is a must have for any frugal, busy-bee freelancer to manage and send invoices to clients.