Just stumbled across a great deal for small businesses and the many entrepreneurs here on CP. Microsoft is offering the Express version of it's software for free. I haven't played around with it fully, but from what I can see it'll handle AR/AP/JE/Customers/Vendors and crank out financial statements which is what most basic users need.
I'm going to be using it for our selfmanaged condo association, and I'm sure it'd be great for everything from photographers and even the eBay Powersellers to track their finances.
http://www.ideawins.com/express.html
(be sure to click on the Express Version, not the full one)