OpenIM
Open source SDK for Instant Messaging
Open source, and universal instant messaging components
OpenIM includes server and client SDKs, achieving high performance, lightweight, and easy-to-extend features. Developers can integrate instant messaging and real-time networking capabilities quickly into their applications by integrating the OpenIM SDK and deploying the server privately, ensuring the security and privacy of business data.
The OpenIM developer community covers individual developers, startups, and large enterprises.
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Supports almost all message types such as text, images, emojis, voice, video, geographical location, files, quotes, business cards, system notifications, custom messages, and more. It supports both individual and group audio and video calls. Supported on iOS, Android, Flutter, uni-app, ReactNative, Electron, Web, H5.
Integrated with 100% reliable IM signaling capability. A single meeting can support up to hundreds of video participants, with server-side audio and video recording.
App administrators, group owners, group administrators, and regular members are supported. Features like mute, group announcements, group join verification, unlimited group members, and on-demand group message loading are available.
Supports self-destructing secret chats with custom durations. Message editing features enrich the social experience, making instant messaging diverse and more entertaining.
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Open Source
Core code is open source, with data under your control. Building a leading global IM open-source community, includes client SDK and server.
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Easily Extensible
The server is implemented in golang. With its unique 'everything is a message' communication model, custom messages and extended features can be easily realized.
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High Performance
Supports a layered governance architecture for clusters. Abstracts online messages, offline messages, and historical message storage models.
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Full Platform Support
Supports iOS, Android natively; Flutter, uni-app, ReactNative cross-platform; all major web frontend frameworks like React, Vue; Mini-programs; and PC with Electron.
The core of OpenIM—both the server and client SDKs—are always open source.
Demos for different platforms are available for reference:
openim-flutter-demo
openim-android-demo
openim-ios-demo
openim-pc-web-demo
openim-uniapp-demo
openim-flutter-demo
openim-android-demo
openim-ios-demo
openim-pc-web-demo
openim-uniapp-demo
openim-sdk-core
openim-sdk-ios
openim-sdk-web-wasm
openim-sdk-flutter
openim-sdk-android
openim-sdk-uniapp
openim-sdk-rn
openim-sdk-web-wasm
openim-sdk-flutter
openim-sdk-android
Open source, and universal instant messaging components