http://www.zimberoff.com/photobyte.htm
First, I have no affiliation with this. Don't get a cut if you download and use the FREE software.
It is good and useful and will help a photo business with records of what is done, including changes on site during a shoot - if you actually use it.
So many believe they want to go from hobby to a business. Photography as a business is not the same as doing it for yourself. A whole different set of problems - mainly due to poor business practices. Software like this can help with being Professional in your record keeping and end up saving major headaches come tax time as well as in client relations and communication.
Blinkbid, fotoquote, Quickbooks, Capture One, Chronosync, Photoshop.
Thank you for sharing this resource!