Google Contacts - Google Contacts is Google's contact management tool that is available in its free email service Gmail, as a standalone service, and as a part of Google's business-oriented suite of web apps Google Apps.
Yout - YouTube to Mp3 Converter
Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
Softorino YouTube Converter - Download YouTube video & audio. Watch and listen offline
Apple Contacts App - Access and edit your contacts from personal, business, and other accounts with the Contacts app.
You-Get - Command-line utility to download media contents from the web