Phone & SMS
Linphone - open source SIP client
SIP (VOIP) phone
Wire • Secure Messenger
Wire offers highly secure communication – anywhere and anytime.
baresip
VoIP User Agent app for Android based on baresip SIP library
Jami
Share, freely and privately
Amadz - Calling App
Clean & intuitive Phone Dialer app following Material Design principles.
Deku SMS
Deku is an SMS app that supports end to end encryption and photo sharing
SimpleX Chat
SimpleX Chat - e2e encrypted messenger without any user IDs - private by design!
Session
Encrypted private messenger
Logger
Track, Analyze, and Manage Your Calls
Launch Chat
Start a WhatsApp, Signal or Telegram chat without saving a number as a contact
Fossify Phone
Unlock a secure, open-source calling experience with Fossify Phone
Fossify Messages
Open-source and Ad-free SMS/MMS messaging app
Keep Alive
Notify others if you haven't used your device in a given period of time
baresip+
VoIP User Agent app for Android based on baresip SIP library
SMS Import / Export
Imports and exports SMS and MMS messages, call logs, and contacts.
SpamBlocker (Call & SMS)
Spam Call/SMS blocker
Welefon
Phone with API
Meshenger
Voice- and video phone App for off-the-grid scenarios.
< polycule >
A geeky and efficient [matrix] client for power users
SchildiChat
Secure messenger for Matrix with a traditional instant messaging experience
Element - Secure Messenger
Group messenger - encrypted messaging, group chat and video calls
Infomaniak kMeet
Free and secure videoconferencing solution
WA Adder
Add WhatsApp contacts without giving WhatsApp access to your contacts!
ThreatScoopOnionChat
A Forked Version focused on privacy from SESSION
QUIK SMS
Open source replacement to the stock SMS app on Android. A revival of QKSMS.
WiVeWa
Client for the WiVeWa system
sms2call
Make a call when receiving a defined SMS
Find My Device (FMD)
Locate and control your device remotely
FluffyChat
Chat with your friends with FluffyChat.
VoIP.ms SMS
Popular Android messaging app for VoIP.ms, a Canadian VoIP provider
