baresip+

SIP and mobile calling and messaging User Agent for Android based on baresip lib

baresip

SIP and mobile calling and messaging User Agent for Android based on baresip lib

TRIfA

TRIfA Tox Client

Jami

Share, freely and privately

Element X - Secure Chat & Call

Sovereign. Seamless. On Matrix

Wire • Secure Messenger

Wire offers highly secure communication – anywhere and anytime.

Threema Libre

Secure and private messaging

Quicall

Secure messaging with chat, voice and video calls.

aTalk

XMPP/Jabber client with encrypted instant messaging and video calls

SimpleX Chat

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

Element Classic

Previous generation Element

Cheogram

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

Session F-Droid

Encrypted private messenger

Nextcloud Talk

Have private video calls and chat using your own server.

Olvid

Private messaging for everyone

Conversations

Encrypted, easy-to-use XMPP instant messenger for your mobile device

another.im

Yet Another Conversations fork but...

monocles chat

is a full-featured XMPP chat client

Ermis

Ermis M is an open-source, privacy focused mobile chat application.

Jitsi Meet

Instant video conferences efficiently adapting to your scale

Mumla

Voice chat on Mumble servers

Snikket

Personal messaging app for groups, with a self-hostable open-source server

Linphone - open source SIP client

SIP (VOIP) phone

Meshenger

Voice- and video phone App for off-the-grid scenarios.

ThreatScoopOnionChat

A Forked Version focused on privacy from SESSION

Sipdroid

A SIP (VOIP) client

Databag

A federated chat client designed for privacy and selfhosting.

StoneAge

A self-hosted P2P messenger - you will need an S3 bucket to use it

unofficial Stud.IP-app

An unofficial app for Stud.IP systems.