《Threema》 - 安全保密的即時通訊工具
Threema GmbH
Threema - Private Messenger
junemoney
Threema Work
Threema Voice Message Plugin
Signal:私密通訊軟件
Signal Foundation
SafeSwiss® - 加密信使
Safeswiss Secure Communications
LINE
LINE (LY Corporation)
Telegram X
Telegram FZ-LLC
Element - 安全的通訊軟體
New Vector Limited
Google 訊息
Google LLC