iBill - Simplest and Best Billing & Invoice Manager is an invoicing system for freelancers and small businesses. iBill makes it easy to manage sales, create invoices, receive and keep track of payments, do your business accounting and calculate taxes, use comprehensive real-time reporting feature to accurately measure business progress. With the Online Invoices simple (and advanced) tools you can view business activity to any level, for easy follow up at any stage of any client, invoice, payment or staff.