You could have downloaded iPodBackup 1.5.4 for Mac from our software library for free. IPodBackup for Mac lies within System Tools, more precisely Backup & Restore. The actual developer of this free software for Mac is Amake.
From the developer:
iPodBackup is a shell script-turned-application (via Platypus) that backs up your home folder to your iPod using the open source backup utility rsync. Combine it with Do Something When to have fully automated incremental backups to your iPod, for free!
You can customize a list of items to be excluded by simply dragging-and-dropping them onto the app.
You may want to check out more Mac applications, such as OrganizerSync, SimpleSync or OnBelay, which might be related to iPodBackup.