Hey John, Just downloaded the Mac version trial, which doesn't appear to be a beta version. However, a number of features in Widows version appear to be missing such as choice between full and incremental backups, and the capability to choose one or more notebooks. Also, there is no feedback that indicates that a backup is underway. Without it, I though the program was not working but actually created three backups. Am I missing something or "WYSIWYG?"