Top 9 Java Messenger Projects

Conversations

21 4,195 7.9 Java

Conversations is an open source XMPP/Jabber client for Android

Project mention: Android Jabber App | reddit.com/r/jabber | 2023-05-04

AFAIK Conversations is one of the best, if not the best. On F-Droid it’s gratis, on Google Play it costs something.
Xabber

0 1,808 0.0 Java

Open-source XMPP client for Android
Sonar

www.sonarsource.com
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deltachat-android

2 936 10.0 Java

Email-based instant messaging for Android.

Project mention: is it possible to make android app using rust? any step by step tutorial? | reddit.com/r/rust | 2022-11-21

For a production app that's doing this, see https://github.com/deltachat/deltachat-android
KryptEY

9 279 10.0 Java

Android keyboard for secure E2EE communication through the signal protocol in any messenger. Communicate securely and independent, regardless of the legal situation or whether messengers use E2EE

Project mention: KryptEY: Android keyboard for secure E2EE communication through the signal protocol in any messenger. Communicate securely and independent, regardless of the legal situation or whether messengers use E2EE | reddit.com/r/privacy | 2023-05-30
Signal-Android

15 200 9.9 Java

Fork from a private messenger for Android with extra options added: full backup and (partial, ony text) xml backup of messages. Restore can happen at any time, not only after a fresh install. Import SMS database. Import of (unencrypted) WhatsApp databases. Removed apk expire. Choose between passphrase protection and the Android screenlock. Choice for the backup location (internal or removable storage on Android < 11 (on 11 and higher this is already possible)). Set the maptype in the place picke (by johanw666)

Project mention: Which version of Signal introduced SMS nags? | reddit.com/r/fossdroid | 2023-02-19

The fork by johanw666 is most likely not going to keep SMS support, see here and here.
Qiscus SDK

0 200 5.7 Java

Qiscus provide everything you need to power up your app with chats. And it's now made simple.
AnonymousMessenger

1 49 6.9 Java

This is an unofficial repository, for the official repository visit: https://git.anonymousmessenger.ly/dx/AnonymousMessenger

Project mention: Wickr Me alternative?? | reddit.com/r/privacy | 2022-11-20

There was another interesting one called Anonymous Messenger ( https://anonymousmessenger.ly/ ) , although getting it to work proved somewhat difficult.
InfluxDB

www.influxdata.com
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Access the most powerful time series database as a service. Ingest, store, & analyze all types of time series data in a fully-managed, purpose-built database. Keep data forever with low-cost storage and superior data compression.
cards2.0

0 8 0.0 Java

Remake of MSN Messenger's Solitaire Showdown
Messagium

0 5 1.3 Java

Messagium is an android app for instant messaging.

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2023-05-30.