Threema. The Secure Messenger
Threema GmbH
Threema - Private Messenger
junemoney
Threema Work. For Companies
Threema OnPrem. Self-Hosted
Threema QR Scanner Plugin
Threema Voice Message Plugin
Signal - 안전한 메신저
Signal Foundation
라인 LINE
LINE (LY Corporation)
카카오톡 KakaoTalk
Kakao Corp.
Session - Private Messenger
Oxen Project