In simple English
This program lets you host your own team chat service on your own server. You get a private space for messages, voice calls, and file sharing that no outside company can read. It acts like Slack or Discord, but you control all the data. You can run it for free on your own hardware, though setting it up takes some technical skill.
What it is
Rocket.Chat is an open-source team communications platform built in TypeScript (a programming language that adds rules to JavaScript to catch bugs early). It gives organizations a fully customizable workspace with apps, video calls, and strict data security.
What it is good for
Solo builders and small teams who want a private communication hub without paying monthly fees to a hosted service, or who need to keep their conversations entirely on their own server for privacy.
- You own all your chat data and messages on your own server.
- Works on desktop, web, and mobile phones with native apps.
- Supports voice calls and file sharing alongside standard text chat.
- Requires Docker (a way to run a program inside its own sealed box, so it cannot break anything else on your server) or Kubernetes to install and run smoothly.
- Needs at least 2 to 4 GB of memory, so check your server has room.
- Large software project with many configuration options, which can feel overwhelming to maintain alone.
Slack or Microsoft Teams
Docker
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docker run -d --name rocketchat -p 3000:3000 rocket.chat:latest