Phone & SMS

Element - Secure Messenger

Group messenger - encrypted messaging, group chat and video calls

baresip

VoIP User Agent app for Android based on baresip SIP library

Cheogram

Chat on the Jabber network (XMPP protocol); focus on features for gateway users

SimpleX Chat

SimpleX Chat - e2e encrypted messenger without any user IDs - private by design!

Simlar - secure calls

Protect your privacy with encrypted phone calls.

Linphone - open source SIP client

SIP (VOIP) phone

Meshenger

P2P voice- and video phone App.

Jami

Secure and distributed communication platform

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

Messaging app

Simple Contacts Pro

Contacts address book for managing recent contacts and vcf contact backups

Jitsi Meet

Instant video conferences efficiently adapting to your scale

Session F-Droid

Encrypted private messenger

FluffyChat

Chat with your friends with FluffyChat.

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

Secure messenger for Matrix with a traditional instant messaging experience

Sipdroid

A SIP (VOIP) client

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

Blink the terminal when receiving a call, SMS or an application notification