Freelancers, if you're doing invoices with timesheets, what software are you currently using?
Been using 17 Hats for a long time and I swear by it. It's got everything I need for all the back-end admin in a way where I can have it all happen seamlessly.
My referral link:
zoho invoicing - the best !
I use http://and.co for the moment. They are acquired by Fiverr, so everything is free, including white-label feature.