Did you already test your tools on OS X 10.8?
I am running 10.8 DP4 and it works perfectly smooth.
I need to fix my contacts and calendar and though about buying your "Spanning Tools for Mac"...
Do you support German phone number formats like "+49 89 322111-0" or "+49 (0) 89 322111-0" in your app "Contacts Cleaner"?