SpyDialer
Cost: Free
Search people via their phone number, name, address, and/or e-mail address by using SpyDialer which contains billions of phone numbers obtained using social media and user-contributed address books.
Concerned about your information showing up on SpyDialer?!?! Check and see. If you appear there, you have the option of deleting your information... anonymously.
The 17 other resources appear here.
