# OpenIM

> Open-source instant messaging server

Chat infrastructure you can embed in your apps.

- Source: https://github.com/openimsdk/open-im-server
- Homepage: https://openim.io
- License: Apache-2.0
- Language: Go
- Stars: 16680
- Forks: 2972
- Contributors: 73
- Last commit: 2026-08-31
- Latest release: v3.8.3-patch.16 (2026-03-19)
- Purpose: Communication
- Runs on: Docker / self-host
- For: Enterprise

## Worth score: 72/100

How much DigGitHub recommends it, from activity, adoption, docs, license and security signals.

- Popularity: 21/25
- Momentum: 10/20
- Maintenance: 17/25
- Community: 12/15
- Readiness: 12/15

## Alternatives

- [Mastodon](https://diggithub.com/mastodon/mastodon.md): Self-hosted social network in the fediverse
- [ntfy](https://diggithub.com/binwiederhier/ntfy.md): Push notifications to phone or desktop with a simple POST
- [Nextcloud](https://diggithub.com/nextcloud/server.md): Self-hosted file sync, sharing and collaboration
- [Zulip](https://diggithub.com/zulip/zulip.md): Open-source team chat with topics
- [Postiz](https://diggithub.com/gitroomhq/postiz-app.md): Agentic social media scheduling
- [LiveKit](https://diggithub.com/livekit/livekit.md): Realtime stack for humans and AI
- [Huly](https://diggithub.com/hcengineering/platform.md): All-in-one project management platform
- [Mattermost](https://diggithub.com/mattermost/mattermost.md): Secure collaboration for technical teams

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Source page: https://diggithub.com/openimsdk/open-im-server
Updated: 2026-10-03