通話與簡訊
Simlar - secure calls
Protect your privacy with encrypted phone calls.
Linphone - open source SIP client
SIP（VoIP）電話
Meshenger
一個開源的端對端
Jami
安全分佈式通信平台
SMS to URL Forwarder
simple incoming SMS to URL forwarder
OpenContacts
A different database for contacts to keep them private only to you.
baresip+
VoIP User Agent app for Android based on baresip SIP library
QKSMS
消息应用
SimpleX Chat
SimpleX Chat - e2e encrypted messenger without any user IDs - private by design!
Simple Contacts Pro
一個沒有廣告的通訊錄應用程式，用來管理聯絡人，並且尊重您的隱私。
Element - 安全的通訊軟體
群組通訊軟體 - 訊息加密、群組聊天與視訊通話
Jitsi Meet
即时视频会议可有效适应您的规模
baresip
VoIP User Agent app for Android based on baresip SIP library
Session F-Droid
加密私人信使
FluffyChat
Chat with your friends with FluffyChat.
Cheogram
Chat on the Jabber network (XMPP protocol); focus on features for gateway users
Privacy Cell
Verify that a phone is using the most secure cell protocols.
SMS Import / Export
Imports and exports SMS and MMS messages, call logs, and contacts.
SchildiChat
具有传统即时消息体验的 Matrix 安全信使
Sipdroid
SIP（VoIP）客戶端
AirMessage
Use iMessage on your Android phone! (Mac computer required)
SMS Forward
SMS Forward is a simple app that allows you to redirect SMS.
Watomatic - Auto Reply For WhatsApp
Auto reply bot for WhatsApp, FB Messenger and more soon
FindMyDevice
Locate your smartphone via SMS when it gets lost
Wire • Secure Messenger
Wire offers highly secure communication – anywhere and anytime.
Silence
Block unknown callers
kMeet
Free and secure videoconferencing solution
Text Torch
Shine a light on your texting behavior
Vibe
Vibrate on a call answer or end
Flash Alert - Call and Message
在收到電話、短信或應用通知時閃爍終端
