Mumla

Voice chat on Mumble serversGPL-3.0-only

JMP SIM Manager

Companion app for the JMP eSIM AdapterGPL-2.0-only

Cheogram

Chat on the Jabber network (XMPP protocol); focus on features for gateway usersGPL-3.0-only

Nextcloud Talk

Have private video calls and chat using your own server.GPL-3.0-only

Dib2Qm

Messenger for secured chats and groups (end-to-end encrypted)GPL-3.0-or-later

aTalk

XMPP/Jabber client with encrypted instant messaging and video callsApache-2.0

aTox

aTox, a beautiful and modern Tox clientGPL-3.0-or-later

ChatLaunch for WhatsApp

Start WhatsApp chats without adding numbers to contacts.MIT

Xtra

a Twitch player and browserAGPL-3.0-only

Nomad - Hubzilla for Android

Client for the Hubzilla social networkGPL-3.0-or-later

Disroot app

This app is like your Swiss Army knife to the Disroot platformLGPL-3.0-only

KryptEY

Keyboard for secure E2EE communication through signal protocol in any messengerGPL-3.0-only

Oversec

Privacy for All Apps! Encrypt and Disguise Messages in All Your Apps!GPL-3.0-or-later

Infomaniak kMeet

Free and secure videoconferencing solutionApache-2.0

Element - Secure Messenger

Group messenger - encrypted messaging, group chat and video callsApache-2.0

Revolution IRC

The next-generation IRC clientGPL-3.0-only

i2pd

Full-featured C++ implementation of I2P clientBSD-3-Clause

QUIK SMS

Open source replacement to the stock SMS app on Android. A revival of QKSMS.GPL-3.0-only

Xabber

Jabber (XMPP) client with multi-account support, clean interfaceGPL-3.0-only

WhatsDeleted

See WhatsApp messages & media deleted by the sender.GPL-3.0-only