I love Harvest because it takes that recorded time and pops it into an invoice. I wouldn't call it "a whole business management" solution, but it does a great job.
http://www.getharvest.com/ http://try.hrv.st/1nxt (ref link, $10 off first month)
http://www.getharvest.com/ http://try.hrv.st/1nxt (ref link, $10 off first month)
It'd be great if we could style our invoices with CSS though.