OpenIM

Spec sheet

What it does

OpenIM provides communication infrastructure for developers to add chat, messaging, voice calls, and video meetings to applications.Read 8 Oct 2026 · openim.io

Intended users

The maker describes Open Source as suited to development and custom client integration, Business to production-ready messaging clients, and Enterprise to production deployments with advanced features.Read 8 Oct 2026 · openim.io

Deployment

OpenIM supports self-hosted deployment, and the Enterprise page says Enterprise can run in a customer's cloud, private network, or production environment.Read 8 Oct 2026 · openim.io

Backend integration

Server APIs support backend management of users, groups, and messages, while webhooks provide event callbacks.Read 8 Oct 2026 · openim.io

Community support

The OpenIM community page offers Slack discussions and community support for development questions and project rollout.Read 8 Oct 2026 · openim.io

Enterprise modules

Voice & Video and video meetings are separate modules purchased as needed and are not included in Enterprise by default.Read 8 Oct 2026 · openim.io

Large groups

OpenIM says its groups can support up to 100K members.Read 8 Oct 2026 · openim.io

Messaging features

Messaging features include text, image, voice, video, file, location, contact card, and custom messages, plus offline messages, history, and multi-device sync.Read 8 Oct 2026 · openim.io

Not a standalone chat app

OpenIM provides SDKs, Server APIs, webhooks, and server-side components rather than a single chat app.Read 8 Oct 2026 · openim.io

SDK integrations

The maker lists SDKs for iOS, Android, JavaScript, Flutter, React Native, uni-app, Electron, C/C++, and Unity.Read 8 Oct 2026 · openim.io

UI limitation

The IMSDK provides communication features and developer APIs but does not include a full chat UI.Read 8 Oct 2026 · openim.io

Voice and video

Voice & Video features include 1:1 and group calls, video meetings, screen sharing, meeting controls, and recording.Read 8 Oct 2026 · openim.io

Plans and prices

Every OpenIM plan and price →

Where Specifiction places it

• Chat Api#15 of 267.7
• Chat APIs#23 of 327.8