Rocket.Chat
Self-hosted team messaging with channels, voice and video calls, file sharing, and cross-workspace federation. The most full-featured open-source Slack alternative
Quick Start
docker run --name rocketchat -p 3000:3000 rocket.chat Overview
Rocket.Chat is a self-hosted messaging platform covering team chat, direct messages, voice and video calls, screen sharing, and file transfers in a single deployable package. It is the most feature-complete open-source Slack alternative, with a UI that will feel immediately familiar to anyone who has used Slack or Discord.
Channels, threads, reactions, search, and message pinning all work as expected. The mobile and desktop apps are polished enough for daily use, and an admin panel handles user management, integrations, and access controls. The free self-hosted tier covers all core functionality with no per-user licensing fees, making it viable for teams of any size.
Rocket.Chat also connects via federation, so workspaces can message each other across instances, useful for organizations that collaborate with external partners.
The honest trade-off is performance and complexity. The install requires MongoDB and Redis alongside the main application, and memory use climbs steeply with active users. Users on review platforms consistently report that mobile app notification handling can be unreliable and that search indexing and notification delivery have been recurring issues.
If you are running a small to medium internal team and want to keep communications off third-party servers, Rocket.Chat delivers. Large deployments benefit from the paid tiers, which include official support and performance tooling.
Rocket.Chat: Pros & Cons
| Pros (The Wins) | Cons (The Friction) |
|---|---|
| Cost & Value: Free self-hosted tier, no per-user fees. Full feature set on open-source install. | Cost & Value: Paid tiers needed for SLA support and enterprise auth features. |
| Workflow: Familiar Slack-like UI reduces onboarding time for new team members. | Workflow: Mobile notifications unreliable. Search returns inconsistent results. |
| Deployment: Docker and cloud options available. Active development and community. | Deployment: MongoDB + Redis required alongside main app; memory use climbs steeply. |
Use Cases
Specific ways to use Rocket.Chat for your workflow.
Deployment Strategy
Recommended ways to host Rocket.Chat in your own environment.