Facebook Messenger

“Most optional” User IDs used: Facebook account is used as ID, which means email or phone number. Supported platforms: iOS, Android, Blackberry, Windows Phone, it is possible to access the service from a computer Declared security: end-to-end encryption in chat […]

Viber

“Your mom’s favorite messenger” Year of launch: 2010 User IDs used: phone number Supported Platforms: Android, BlackBerryOS, iOS, Symbian, Windows Phone, Bada, Windows, OS X and Linux Declared security: the messenger uses SSL encryption of the communication channel, and SHA-256RSA […]