Zadarma
Zadarma Project
Hushed: US Second Phone Number
AffinityClick Inc.
Linphone
Belledonne communications
Zadarma Сonf – free video conf
SMS Virtual - Receive SMS
Privacy Tec
Google Voice
Google LLC
EasyLine Business Phone Number
TalkU International Inc.
Text Me: Second Phone Number
TextMe, Inc.
Text Free: Second Phone Number
Pinger, Inc
Yolla: International Calling
Yolla Calls International