MobileIMSDK is a lightweight cross-platform instant messaging communication framework designed for real-time chat and push-style communication. It supports multiple client platforms, including iOS, Android, Java, HTML5, mini programs, UniApp, and HarmonyOS Next, with a Netty-based server side. The framework is notable for supporting UDP, TCP, and WebSocket protocols in the same open-source IM communication layer. It has been developed and refined over many years, making it a mature option for teams building custom messaging systems. MobileIMSDK focuses on the communication layer rather than a complete consumer chat app, so developers can build their own user interface and business logic on top of it. It is useful for mobile apps, web apps, enterprise messaging, live communication features, and custom push systems.

Features

  • Cross-platform IM communication framework
  • UDP, TCP, and WebSocket support
  • Netty-based server implementation
  • iOS, Android, Java, H5, UniApp, and HarmonyOS Next clients
  • Lightweight real-time messaging layer
  • Optional SSL/TLS transport customization

Project Samples

MobileIMSDK Screenshot 1

Project Activity

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Categories

Messaging

License

Apache License V2.0

Follow MobileIMSDK

MobileIMSDK Web Site

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Additional Project Details

Operating Systems

Android, Apple iPhone, Mac, Windows

Programming Language

Objective C

Related Categories

Objective C Messaging Platform

Registered

2026-05-18
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