Mac users interested in Spanning contacts cleaner generally download:
Contacts Cleaner analyzes, reports, and fixes dozens of problems with Address Book and Apple Sync Services problems ranging from the obvious, such as duplicated contacts, to the subtle, such as invalid characters and poorly formatted contact names.
Your contacts are the center of your personal social network, and as such are often synchronized among your Mac, your iPhone, and many other apps, services, and devices.
Spanning Tools for Mac analyzes, reports, and fixes dozens of problems with iCal, Address Book, and Apple Sync Services—problems ranging from the obvious, such as duplicated calendar events, to the subtle, such as invalid calendar dates and poorly formatted contact names.