With TrueCaller you can make reverse number lookups in more than 25 countries by entering the phone number and pressing Search.
You can save the contact to your phonebook and see the address on a map.
With this full version of TrueCaller you can access the "Update Phonebook"-feature which allows you to update your whole phonebook with missing information
GV Mobile + brings the power of Google Voice to your iPhone.
Google Voice is only available in The United States. You must already have a Google Voice account in order for this application to work.
Canadian and United Kingdom users: While this app is for sale in your country, you will not be able to make calls from your phone (without an advanced setup)
Ooma Mobile for iPhone - Introducing Ooma Mobile, an application that lets Ooma customers make US and international calls from their iPhone, iPod touch or iPad. Phone calls made using the Ooma Mobile application are transmitted through your active Wi-Fi or 3G data connection. Simply download the application, enter your Ooma Mobile username and password (available at my.ooma
Ooma Mobile for iPhone - Introducing Ooma Mobile, an application that lets Ooma customers make US and international calls from their iPhone, iPod touch or iPad. Phone calls made using the Ooma Mobile application are transmitted through your active Wi-Fi or 3G data connection. Simply download the application, enter your Ooma Mobile username and password (available at my.ooma
SPYPhone GOLD Internet Edition is software that you install on a mobile phone. After installation, SPYPhone secretly records events that happen on the phone and delivers this information to a web account, where you can view these reports 24×7 from any Internet enabled computer or mobile phone