CardDAV cleaner 1.3
his program logs in to your webdav server and compares details of your contacts with each other. If it finds several contacts with common propperties like email, phone numbers or names, you will have the option to merge those. Furthermore, the format of the vcards is checked: if the program finds vcard not fitting the format standard, you have the option to correct those.
The program will not make any changes to your adress book until you confirm to agree to the proposed changes, which is the very last step after going through the cleaning wizard.