Java Chat

Open-source Java projects categorized as Chat

Top 23 Java Chat Projects

  • Conversations

    Conversations is an open source XMPP/Jabber client for Android

    Project mention: Modern XMPP Server | | 2023-12-01
  • jitsi

    Jitsi is an audio/video and chat communicator that supports protocols such as SIP, XMPP/Jabber, IRC and many other useful features.

    Project mention: SIP/VoIP softphone with GUI that works well with most commercial SIP/VoIP services? | /r/debian | 2023-04-08

    Yep, best client I found. It is still being updated, but no official releases, you just get latest from the git tags section:

  • InfluxDB

    Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  • ChatKit for Android

    Android library. Flexible components for chat UI implementation with flexible possibilities for styling, customizing and data management. Made by Stfalcon

  • Xabber

    Open-source XMPP client for Android

  • openvidu

    OpenVidu Platform main repository

    Project mention: Ask HN: Zoom alternatives which preserve privacy and are easy to use? | | 2023-08-07

    Git repo:

    Not affiliated, just trying to save a moment or two of confusion and some extra clicking

  • deltachat-android

    Email-based instant messaging for Android.

  • chatty

    Twitch Chat Client written in Java (by chatty)


    Learn 300+ open source libraries for free using AI. LearnThisRepo lets you learn 300+ open source repos including Postgres, Langchain, VS Code, and more by chatting with them using AI!

  • revolution-irc

    A modern Android IRC client. #revolutionirc on

    Project mention: ⟳ 2 apps added, 49 updated at | /r/FDroidUpdates | 2023-04-25

    Revolution IRC (version 0.5.5): The next-generation IRC client

  • twitch4j

    Modular Async/Sync/Reactive Twitch API Client / IRC Client

  • tigase-server

    (M) Highly optimized, extremely modular and very flexible XMPP/Jabber server

  • MineDown

    A MarkDown inspired markup library for Minecraft chat components

  • Chat21 SDK Documentation

    Android Chat SDK built on Firebase

  • Signal-Android

    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)

  • Qiscus SDK

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

  • ChatVoicePlayer

    An Android library to make the implementation of voice/audio messages' playing easier

  • react-native-zendesk-chat

    React Native Wrapper around Zendesk Chat v2

  • kouchat-android

    KouChat for Android

  • openinwa

    Create chat in WhatsApp without saving number to your phonebook

    Project mention: Apple says it'll remove iMessage and FaceTime in UK rather than break encryption | | 2023-07-20

    I use an app called "Open In WhatsApp" which lets you paste / write a phone number and it will open a conversation with that number (by using android intents). You can also share contacts from the Phone app to this App. (I recommend downloading from f-droid)

  • Kommunicate Live Chat SDK Android Chatbot SDK

    Project mention: Show HN: Android Chat SDK for Customer Support | | 2023-06-26
  • deltalab-android

    🧪 Experimenting with alternative Delta Chat futures

  • WristAssist

    A powerful ChatGPT and DALL-E app for all WearOS devices

    Project mention: ChatGPT on WearOS watches (WristAssist) | /r/Android | 2023-10-31

    The entire source code is published on GitHub.

  • bluebub

    A library for creating chat bubbles in JavaFX

  • cometchat-chat-uikit-android-java

    Ready-to-use Chat UI Components for Java (Android)

  • WorkOS

    The modern API for authentication & user identity. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

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 2023-12-01.

Java Chat related posts


What are some of the best open-source Chat projects in Java? This list will help you:

Project Stars
1 Conversations 4,209
2 jitsi 4,027
3 ChatKit for Android 3,653
4 Xabber 1,809
5 openvidu 1,756
6 deltachat-android 1,029
7 chatty 815
8 revolution-irc 522
9 twitch4j 366
10 tigase-server 312
11 MineDown 269
12 Chat21 SDK Documentation 232
13 Signal-Android 232
14 Qiscus SDK 201
15 ChatVoicePlayer 183
16 react-native-zendesk-chat 125
17 kouchat-android 87
18 openinwa 73
19 Kommunicate Live Chat SDK 68
20 deltalab-android 62
21 WristAssist 61
22 bluebub 46
23 cometchat-chat-uikit-android-java 34
The modern API for authentication & user identity.
The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.