Абсолютно надежные: SilentCircle, RedPhone, OSTel, ChatSecure, Signal.
Надежные: Telegram, Wickr, Threema, Surespot.
Умеренно безопасные: CoverMe, BBM, iMessage, FaceTime, Hangouts, FaceBook Messenger.
Ненадежные: Viber, WhatsApp, LINE, Tango, ooVoo, Kakao Talk, WeChat, Nimbuzz, Hike, Chat On, Kik, Voxer, GroupMe, MessageMe, Imo.im, TalkRay, IM+.
Надежные: Telegram, Wickr, Threema, Surespot.
Умеренно безопасные: CoverMe, BBM, iMessage, FaceTime, Hangouts, FaceBook Messenger.
Ненадежные: Viber, WhatsApp, LINE, Tango, ooVoo, Kakao Talk, WeChat, Nimbuzz, Hike, Chat On, Kik, Voxer, GroupMe, MessageMe, Imo.im, TalkRay, IM+.