Windows to MAC.  Visual quick guide for new users

MacFreelance publishes a billing schedule

MacFreelance helps create and maintain customer lists and configure multiple companies for invoice creation and issuance. You can add fixed or time charges, and set billing based on minutes or months.

It also allows the customization of invoices, generate receipts and manage international clients through the use of local currencies and the support of different types of taxes. Additionally, the program integrates with the System Calendar, iCal and Spotlight.

The system requirements are Mac OS X 10.4 or later; and the application is Universal binary.