I am curious.
+1 on Harvest. Good pricing, nice UI and haven't encountered any missing features. Also integrates with Outright.com, which I use for accounting (it's amazing if you're a freelancer. Even calculates your estimated taxes for you. My accountant confirmed it was pretty accurate.)
I use TimeCamp for time tracking and invoicing https://www.timecamp.com
I co-created Invoice at Once http://invoiceatonce.com It's an invoice generator tool online. No registration needed.
If you need a good design on your invoice I think this is a good choise.
Harvest for time tracking, Quotient for estimates, Xero for invoicing
UK focused: crunch.co.uk for invoicing, accounting and tax returns.
I use Billings, but wouldn't really recommend it. (http://www.marketcircle.com/billings/)
Been using harvest for a couple years and it has been getting better and better.
Harvestapp.com and Xero.com
We've tried Freshbooks, Harvest, Wave Accounting, and Ballpark, but then we just added invoicing to QuoteRobot so that's what we use now: http://quoterobot.com
Does anyone have any experience with Ballpark? http://www.ballparkapp.com
Ballpark is a really nice, beautifully designed app. Definitely worth a try.
Also on harvest, although it can be kind of expensive if you have an awkward team size (we're at 3 + 2 interns).
x2 on Harvest.
I signed up for a free account with harvest and use their App. My favorite so far.
Pen and paper actually, but I currently have only 1 client thats full time, so that makes it easy.
Do you like, take a photo of the invoice you drew and email it?
Was hoping DN used markdown, guess not.