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open-im-server
Provides real-time messaging capabilities for applications, supporting high performance and scalability. It enables integration with various platforms and offers rich messaging features to enhance user engagement.
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zhqiang-li
Apache License 2.0
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Last Updated 2026-02-19
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messagingzhqiangservermessaging zhqiangmessaging featuresmessaging capabilities
⭐️ Open source Instant Messaging Server ⭐️
English • 简体中文 • Docs
## ✨ About OpenIM Open-IM-Server, meticulously developed in pure Golang, is a powerful instant messaging server. Its distinct communication method, employing pb+websocket, views every interaction as a message, streamlining customization without altering server code. Built on a microservice architecture, it offers deployment through clusters for outstanding performance and scalability. Open-IM-Server is more than an instant messaging server; it's a powerful tool for incorporating real-time networking into your applications, positioning itself as your premier choice for integration! 🚀 Please be aware that Open-IM-Server does not function as a standalone product and does not offer built-in account registration or login services. To ease your implementation process, we've open-sourced the [chat repository](https://github.com/OpenIMSDK/chat), which comprises these features. Deploying this chat business server in conjunction with Open-IM-Server expedites the setup of a comprehensive chat product. 👥 Further enhancing your experience, we also provide an SDK client, wherein most complex logics are implemented. The [SDK repository](https://github.com/OpenIMSDK/openim-sdk-core) can be found at [this link](https://github.com/OpenIMSDK/openim-sdk-core). The [chat repository](https://github.com/OpenIMSDK/chat) is our business server while the 'core' represents the high-level encapsulation of the SDK, synergistically working together to deliver superior results. ✨ ## :star2: Why OpenIM **🔍 Function screenshot display**
| 💻🔄📱 Multi Terminal Synchronization 🔄🖥️ | 📅⚡ Efficient Meetings 🚀💼 |
| :----------------------------------------------------------: | :---------------------------------------------------------: |
| | |
| 📲🔄 **One-to-one and Group Chats** 👥🗣️ | 🎁💻 **Special Features - Custom Messages** ✉️🎨|
| | |
1. **Comprehensive Message Type Support :speech_balloon:**
✅ Supports almost all types of messages, including text, images, emojis, voice, video, geographical location, files, quotes, business cards, system notifications, custom messages and more
✅ Supports one-on-one and multi-person audio and video calls
✅ Provides terminal support for multiple platforms such as iOS, Android, Flutter, uni-app, ReactNative, Electron, Web, H5
2. **Efficient Meetings Anytime, Anywhere :earth_americas:**
✅ Based on IM (Instant Messaging) with 100% reliable forced signaling capabilities, it paves the way for IM systems, deeply integrated with chat applications
✅ Supports hundreds of people in a single meeting, with subscription numbers reaching thousands, and server-side audio and video recording
3. **One-on-one and Group Chats for Various Social Scenarios :busts_in_silhouette:**
✅ OpenIM has four roles: application administrator, group owner, group administrator, and regular member
✅ Powerful group features such as muting, group announcements, group validation, unlimited group members, and loading group messages as needed
4. **Unique Features :star2:**
✅ Supports read-and-burn private chats, customizable duration
✅ Message editing function broadens social scenarios, making instant communication more diverse and interesting
5. **Open Source :open_hands:**
✅ The code of OpenIM is open source, self-controlled data, aimed at building a globally leading [IM open source community](https://github.com/OpenIMSDK), including [client SDK](https://github.com/openimsdk/openim-sdk-core) and server
✅ Based on open source Server, many excellent open source projects have been developed, such as [OpenKF](https://github.com/OpenIMSDK/OpenKF) (Open source AI customer service system)
6. **Easy to Expand :wrench:**
✅ The OpenIM server is implemented in Golang, introducing an innovative "everything is a message" communication model, simplifying the implementation of custom messages and extended features
7. **High Performance :racing_car:**
✅ OpenIM supports a hierarchical governance architecture in the cluster, tested by a large number of users, and abstracts the storage model of online messages, offline messages, and historical messages
8. **Full Platform Support :tv:**
✅ Supports native iOS, Android; cross-platform Flutter, uni-app, ReactNative; major web front-end frameworks such as React, Vue; applets; and PC platforms supported by Electron
9. **The ultimate deployment experience 🤖**
✅ Supports [cluster deployment](https://github.com/openimsdk/open-im-server/edit/main/deployments/README.md)
✅ Supports multi-architecture mirroring, our Docker images are hosted not only on GitHub but also on Alibaba Cloud and Docker Hub supporting multiple architectures. Visit [our GitHub packages](https://github.com/orgs/OpenIMSDK/packages?repo_name=Open-IM-Server) and read our [version management document](https://github.com/openimsdk/open-im-server/blob/main/docs/conversions/version.md) for more information.
11. **A large ecosystem of open source communities 🤲**
✅ We have tens of thousands of users and many solutions to problems.
✅ We have a large open source community called [OpenIMSDK](https://github.com/OpenIMSDK) that runs the core modules, we have an open source community called [openim-sigs](https://github.com/openim-sigs) to explore more IM-based infrastructure products.
## :rocket: Quick Start
You can quickly learn OpenIM engineering solutions, all it takes is one simple command:
$ make demo
Deploying with Docker Compose
It is recommended to use Docker Compose for deployment, which can easily and quickly deploy the entire OpenIM service on a single node + [https://github.com/openimsdk/openim-docker](https://github.com/openimsdk/openim-docker) > **Note** > > If you don't know OpenIM's versioning policy, 📚Read our release policy: https://github.com/openimsdk/open-im-server/blob/main/docs/conversions/version.mdCompile from Source
Ur need `Go 1.18` or higher version, and `make`.go version && make --version || echo "Error: One of the commands failed."
$ curl --silent "https://api.github.com/repos/openimsdk/open-im-server/releases" | jq -r '.[].tag_name'
$ OPENIM_VERSION=`curl -s https://api.github.com/repos/openimsdk/open-im-server/releases/latest | grep -oE '"tag_name": "[^"]+"' | head -n1 | cut -d'"' -f4`
# OPENIM_VERSION=v3.3.0
# install openim dependency
$ git clone https://github.com/openimsdk/open-im-server openim/openim-server && export openim=$(pwd)/openim/openim-server && cd $openim/openim-server && git checkout $OPENIM_VERSION
$ make init && docker compose up -d && make start && make check
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