Confide - 私人聊天 & 秘密即時訊息
Mobile Heroes
SafeSwiss® - 加密信使
Safeswiss Secure Communications
Signal:私密通訊軟件
Signal Foundation
CoverMe - Second Phone Number
CoverMe Secure Messenger Inc.
Ghost – Private Messaging
iavatars ltd.
Incognito Private Messenger
Yevgen Chernogubov
Hidden Chat For WhatsApp
Medialogix Studio
已讀不回助理
HSTAR
Skred Messenger
SKRED
Unseen - No Last Seen
Firehawk