# wildfirechat/im-server

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8,507 stars · 1,909 forks · Java · NOASSERTION

## Links

- GitHub: https://github.com/wildfirechat/im-server
- Homepage: http://docs.wildfirechat.cn
- awesome-repositories: https://awesome-repositories.com/repository/wildfirechat-im-server.md

## Topics

`im` `voip`

## Description

WildfireChat’s im-server is an open-source instant messaging backend that handles message routing, user management, and group chat for private deployments. It provides a self-hosted messaging platform that can run on private infrastructure without third-party cloud dependencies, supporting enterprise messaging with group management, user directories, and external system integration.

The server synchronizes messages and state across mobile, desktop, web, and mini-program clients simultaneously, and supports real-time audio/video calls with group conferencing and live streaming. It includes encrypted network transport using AES, local database protection with SqlCipher, and plugin-based content moderation that can route messages through external review servers or filter against built-in sensitive word lists. The system scales horizontally across clusters to handle millions of concurrent users, with database-centric message storage and multi-protocol client synchronization.

Beyond core messaging, the platform offers audio/video conferencing, broadcast channel publishing, chat bot integration, custom message type support, and IoT messaging integration. It provides RESTful APIs for external system integration, including group management, media messaging, and server-side message dispatch. Additional capabilities include voice-to-text transcription, social feed display, organizational directory provisioning, and remote message search.

The server can be deployed on private infrastructure with a single startup command, and includes client application building for Android, iOS, Uniapp, Flutter, PC, Web, and mini-programs.

## Tags

### Business & Productivity Software

- [Enterprise Messaging Servers](https://awesome-repositories.com/f/business-productivity-software/enterprise-messaging-servers.md) — Provides a scalable server for organizations with group management, user directories, and external system integration.

### Data & Databases

- [Client-Server State Synchronization](https://awesome-repositories.com/f/data-databases/client-server-state-synchronization.md) — Synchronizes messages and state across mobile, desktop, web, and mini-program clients simultaneously. ([source](https://cdn.jsdelivr.net/gh/wildfirechat/im-server@wildfirechat/README.md))
- [Cross-Device State Synchronization](https://awesome-repositories.com/f/data-databases/cross-device-state-synchronization.md) — Keeps messages, contacts, and state consistent across mobile, desktop, web, and mini-program clients. ([source](http://docs.wildfirechat.cn/))
- [Horizontal Scaling](https://awesome-repositories.com/f/data-databases/horizontal-scaling.md) — Supports horizontal scaling across clusters to handle millions of concurrent users.
- [Message Storage](https://awesome-repositories.com/f/data-databases/message-storage.md) — Persists messages in relational database tables with partitioned storage for efficient retrieval.
- [Message Search](https://awesome-repositories.com/f/data-databases/message-search.md) — Builds search capability over stored messages by querying the database or syncing to a dedicated search engine. ([source](https://docs.wildfirechat.cn/faq/server.html))

### Development Tools & Productivity

- [REST API Integrations](https://awesome-repositories.com/f/development-tools-productivity/rest-api-integrations.md) — Provides RESTful endpoints for sending messages, managing users, and synchronizing data. ([source](http://docs.wildfirechat.cn/))
- [Video Meeting Servers](https://awesome-repositories.com/f/development-tools-productivity/open-source-software/video-meeting-servers.md) — Manages multi-participant audio/video conferences with server-side recording and support for over 100 attendees. ([source](http://docs.wildfirechat.cn/))

### DevOps & Infrastructure

- [Instant Messaging Server Deployments](https://awesome-repositories.com/f/devops-infrastructure/application-server-deployments/instant-messaging-server-deployments.md) — Ships a complete core messaging server and application server for private instant messaging deployment. ([source](https://docs.wildfirechat.cn/quick_start/))
- [Private Cloud Hosting](https://awesome-repositories.com/f/devops-infrastructure/private-cloud-hosting.md) — Runs the entire messaging system on private infrastructure without third-party cloud services. ([source](http://docs.wildfirechat.cn/))
- [Instant Messaging Server Deployments](https://awesome-repositories.com/f/devops-infrastructure/single-server-deployment-utilities/instant-messaging-server-deployments.md) — Deploys a complete instant messaging server on private infrastructure with a single startup command. ([source](https://cdn.jsdelivr.net/gh/wildfirechat/im-server@wildfirechat/README.md))

### Graphics & Multimedia

- [Bidirectional Audio-Video Calling](https://awesome-repositories.com/f/graphics-multimedia/bidirectional-audio-video-calling.md) — Establishes real-time voice and video calls between two or more participants, supporting group calls and 1080P resolution. ([source](http://docs.wildfirechat.cn/))
- [Interactive Live Streaming](https://awesome-repositories.com/f/graphics-multimedia/interactive-live-streaming.md) — Broadcasts real-time video to an audience with audience participation features like comments or reactions. ([source](https://docs.wildfirechat.cn/))

### Mobile Development

- [Mini Program Messaging](https://awesome-repositories.com/f/mobile-development/mini-program-development/mini-program-messaging.md) — Keeps messages, contacts, and state consistent across mobile, desktop, web, and mini-program clients.
- [Message Forwarders for Review](https://awesome-repositories.com/f/mobile-development/mobile-utilities/message-forwarders/message-forwarders-for-review.md) — Relays all client messages to an external review server for moderation of images, videos, and custom content. ([source](https://docs.wildfirechat.cn/faq/server.html))

### Networking & Communication

- [Phone Verification Code Logins](https://awesome-repositories.com/f/networking-communication/communication-platforms-services/messaging-notification-systems/messaging-automation/account-authentication-gateways/account-authentication/qr-code-phone-verification-logins/phone-verification-code-logins.md) — Authenticates users via phone number and verification code with a default test code for self-hosted servers. ([source](https://docs.wildfirechat.cn/quick_start/))
- [Group Chat Administration](https://awesome-repositories.com/f/networking-communication/group-chat-administration.md) — Creates and administers group conversations supporting up to 10,000 members with membership controls.
- [Instant Messaging Services](https://awesome-repositories.com/f/networking-communication/instant-messaging-services.md) — Handles message routing, user management, and group chat for private instant messaging deployments.
- [Client State Synchronizations](https://awesome-repositories.com/f/networking-communication/multi-protocol-clients/client-state-synchronizations.md) — Synchronizes messages and state across mobile, desktop, web, and mini-program clients simultaneously.
- [Real-time Communication Servers](https://awesome-repositories.com/f/networking-communication/real-time-communication-servers.md) — Supports instant messaging, audio/video calls, and live streaming with group chat and conference features.
- [Real-Time Voice and Video Communication](https://awesome-repositories.com/f/networking-communication/real-time-voice-and-video-communication.md) — Establishes real-time voice and video calls between two or more participants with group call support.
- [Self-Hosted Messaging Platforms](https://awesome-repositories.com/f/networking-communication/self-hosted-messaging-platforms.md) — Provides a deployable messaging backend that runs on private infrastructure without third-party cloud dependencies.
- [Broadcast Messaging Channels](https://awesome-repositories.com/f/networking-communication/broadcast-messaging-channels.md) — Operates a channel or official-account system to push messages to a subscriber base. ([source](http://docs.wildfirechat.cn/))
- [Chat Bot Integrations](https://awesome-repositories.com/f/networking-communication/chat-bot-integrations.md) — Connects automated bot agents that can send and receive messages within conversations. ([source](https://docs.wildfirechat.cn/))
- [High-Concurrency Networking](https://awesome-repositories.com/f/networking-communication/high-concurrency-networking.md) — Supports cluster deployment and handles over one million simultaneous online connections. ([source](http://docs.wildfirechat.cn/))
- [Large-Scale Group Communication](https://awesome-repositories.com/f/networking-communication/large-scale-group-communication.md) — Supports creating and administering group conversations with up to 10,000 members. ([source](http://docs.wildfirechat.cn/))
- [Rich Message Types](https://awesome-repositories.com/f/networking-communication/messaging-exchange-frameworks/rich-message-types.md) — Supports defining and transmitting application-specific message payloads beyond built-in formats. ([source](https://docs.wildfirechat.cn/))
- [Video Conferencing Systems](https://awesome-repositories.com/f/networking-communication/video-conferencing-systems.md) — Manages multi-user conference rooms with real-time audio and video streams for team meetings. ([source](https://docs.wildfirechat.cn/))

### Security & Cryptography

- [Encrypted Connection Authentications](https://awesome-repositories.com/f/security-cryptography/end-to-end-encryption/credential-encryption/sqlcipher-based-encryptions/encrypted-connection-authentications.md) — Encrypts network traffic with AES and protects local databases with SqlCipher to secure all communication. ([source](http://docs.wildfirechat.cn/))
- [User Profile Management](https://awesome-repositories.com/f/security-cryptography/identity-access-management/identity-management/user-management/user-profile-management.md) — Stores user information, friend links, and group memberships on the server for client access. ([source](https://docs.wildfirechat.cn/))
- [Transit and At-Rest Encryption](https://awesome-repositories.com/f/security-cryptography/privacy-data-protection/data-encryption/end-to-end-encryption/transit-and-at-rest-encryption.md) — Encrypts network connections with AES and client databases with SqlCipher to protect message data in transit and at rest. ([source](https://cdn.jsdelivr.net/gh/wildfirechat/im-server@wildfirechat/README.md))
- [AES-Encrypted Transports](https://awesome-repositories.com/f/security-cryptography/transport-layer-encryption/aes-encrypted-transports.md) — Secures all client-server communication with AES encryption for message content in transit.
- [Content Moderation Filters](https://awesome-repositories.com/f/security-cryptography/content-moderation-filters.md) — Routes messages through external review servers or filters against built-in sensitive word lists.
- [Organizational Directory Provisioners](https://awesome-repositories.com/f/security-cryptography/directory-services/contact-directory-connectors/organizational-directory-provisioners.md) — Lists users by department and role so members can find and contact colleagues. ([source](https://docs.wildfirechat.cn/))
- [SQLCipher-Based Encryptions](https://awesome-repositories.com/f/security-cryptography/end-to-end-encryption/credential-encryption/sqlcipher-based-encryptions.md) — Encrypts client-side databases with SqlCipher to safeguard message history and user data at rest.
- [Encrypted Message Moderation](https://awesome-repositories.com/f/security-cryptography/security-and-access-control/content-moderation-filters/encrypted-message-moderation.md) — Encrypts network connections and databases while filtering or forwarding messages for content review.

### Web Development

- [External API Integrations](https://awesome-repositories.com/f/web-development/external-api-integrations.md) — Provides RESTful APIs for building custom applications, bots, and channel services. ([source](https://cdn.jsdelivr.net/gh/wildfirechat/im-server@wildfirechat/README.md))
- [Server-Side REST API Frameworks](https://awesome-repositories.com/f/web-development/restful-api-development/server-side-rest-api-frameworks.md) — Exposes standard HTTP REST endpoints for user management, messaging, and integration.
- [Message Content Filtering](https://awesome-repositories.com/f/web-development/request-routing/message-content-filtering.md) — Scans text messages against a built-in sensitive word list and applies configurable actions like blocking or replacement. ([source](https://docs.wildfirechat.cn/faq/server.html))