Wow. I was looking for a simple way to create invoices for services that I offer. It's always a crap-shoot for what you are going to get with different packages but I downloaded nBill Lite and installed it with no issues. I easily created a couple of test invoices in minutes! I've not hooked up any payment gateways or anything - I just print them out so it works great for me. So simple, so easy, and oh yeah, it's free! Highly recommended!