Invoicera

Invoicera is an online invoicing software that goes all the way from initial estimate to final payments. It supports multiple clients with different projects and can be used by multiple staff members. On Invoicera you can add tasks and services, set hourly rates, and track time as a project goes on. Once the project is complete, employee time sheets and accumulated expenses can be easily converted into customizable invoices. Invoices can then be emailed out to clients, and users can even set up payment gateways so that clients can be directly through Invoicera. Alternatives include Harvest, FreshBooks, and TradeShift.