https://locichat.uk/ - Loci is a production ready real-time messaging system building on top of Domain Driven Design mindset and Hexagonal Architecture

xteam IM - 企业级加密办公聊天软件。支持团队架构、话题驱动、消息同步、音视频通话。多重加密，聊天记录可随时删除。全端支持（PC/Web/Android/iOS），线上成熟运营4-5年。

A database-less instant messaging app without login or sign-up feature, just share the unique id with your buddy and start chatting.

⚡ Loci: Connect Instantly – Fast, secure | Spring Boot 3 + Angular 17 + WebSocket | DDD/Hexagonal

Affix is a fun twist on a social networking and chatting applications where you’re matched with users based on common interests to start chatting and make connections with. Made on Android Studio JAVA with Firebase as backend.

Bluetooth chat app off a youtube tutorial.

This is the backend of a real-time chat application built using Java Spring Boot. It supports one-to-one messaging using WebSockets for live communication and REST APIs for user management, authentication, and message history. The project is designed to work seamlessly with the frontend built using React

In this Project, we have made Chat Application.

A lightweight microblogging backend powering “TF is going on!?”. Provides user management, posting, following, and feed generation using Java 25, Spring Boot 4, JPA, and PostgreSQL on AWS RDS.

Try to build a smart and comfortable messanger app like telegram.

Real-time messaging platform — Spring Boot, React, WebSocket, PostgreSQL

A sleek, modular Java Swing desktop messenger that sends Text, Image, or Audio messages via Email, WhatsApp, or SMS — all powered by the Bridge Pattern.

Chat Messaging Android application made with Back4App as a backend

Messaging Application: A challenging project involving Firebase, allowing users to send messages, images, upload stories, and participate in group chats.

ChitChat is a Java based android application.It uses FireBase as the database.

A chatting service for 2 people.

Mock JavaFX-based chat application inspired by Discord, originating from a school project.

Sending and receiving messages from different computers by the command line interface thanks to a Java program and sockets

A Distributed System following the Publisher - Subscriber pattern. Also includes an Android Application that acts as a client, sending and receiving messages, and a local file system for persistence.

Messaging app made in Java made as a school project.