[mdorazio]

Usually QuickBooks. It's not amazing, but it's pretty standard and all my clients are used to it. I've got a couple templates setup for standard work - one for fixed rate hourly and another for project based. The real hard part is getting clients to actually pay on time ;)

[poulsbohemian]

A thought on this: The reason I've stuck with QuickBooks since 2005 (!!!) is that I know my accountant will prefer it. It's not the cheapest, it isn't the easiest, but it keeps the accountant happy and that's good enough for me.