SixCentral is a client, proposal & invoice organization and management web application.
With SixCentral, you will have the ability to have a single place to organize all of your current and prospective clients. From there, you can create new project proposals and send them to any client in your database. Your clients will have the ability to accept, deny, postpone or comment on your proposal. Everything will be stored at SixCentral — instead of your inbox.