Rocket.Chat Review

Rocket.Chat describes itself as a secure, fully customizable communications platform for organizations with high standards of data protection, supporting conversations between colleagues, with other companies, and with customers or citizens regardless of how they connect. The README says tens of millions of users in more than 150 countries use it, naming organizations such as Deutsche Bahn, the US Navy, and Credit Suisse. Deployment methods include Docker, Podman, or Kubernetes on your own servers, an air-gapped workspace for isolated networks, dedicated cloud hosting, and federation to communicate across a federated network. Web, desktop, and mobile apps are provided, and a Trust Center and Compliance Center document security practices. The license file says content under apps/meteor/ee and ee is licensed under a separate enterprise license, while everything else is MIT. The website's current enterprise plans emphasize on-premises, private cloud, or air-gapped deployment, compliance readiness (HIPAA-supportive, GDPR, and others), federation, and for defense customers FIPS 140-3 cryptography and XMPP and Matrix federation, with some items marked as planned for 2026.

The system requirements page states Rocket.Chat 8.x needs MongoDB 8.0 or later (upgrading from 7.x requires moving to MongoDB 8.0 first) and Node.js 22 or 24, bundled in Docker and Helm. Starter deployments without high availability support up to 500 concurrent users on 2 vCPU and 4 GiB RAM for Rocket.Chat plus a three-replica MongoDB; commercial setups with high availability need 4 vCPU and 8 to 12 GiB RAM; above 5,000 concurrent users the guidance is microservices on Kubernetes. File uploads should use object storage (S3, Google Cloud Storage, or MinIO) rather than GridFS. We did not deploy it.

Users get channels, direct messages, threads, and mobile and desktop apps, with omnichannel features aimed at customer engagement. The product breadth is larger than a simple Slack clone, which can mean more administrative surface. We rely on the README and documentation pages here.

• Self-hosted, air-gapped, or dedicated-cloud deployment
• Docker, Podman, Kubernetes, and microservices at scale
• Federation, including XMPP and Matrix for defense customers
• Compliance and trust documentation
• Web, desktop, and mobile apps
• Open core with enterprise directories under a separate license

• Strong fit for regulated, sovereign, and disconnected environments
• Flexible deployment, from a small workspace to large Kubernetes clusters
• Mature product with a big install base, about 46,300 stars
• Federation options beyond a single workspace

• Enterprise features sit under a proprietary license, so the open-source edition is a subset
• Pricing is not public on the pages we could read; we could not retrieve Community, Starter, or Pro details
• Operational requirements include a three-member MongoDB replica set and object storage for production
• Heavier than lightweight chat tools

A free self-managed workspace is available for evaluation. The plans page lists Commercial (get pricing), Government (custom quote), and Defense editions without public prices, and mentions Starter for technical evaluation, small businesses, and non-profits without giving details. We could not confirm specific per-user prices.

Slack is a hosted collaboration tool with a vast integration marketplace and a polished experience. Rocket.Chat keeps data on infrastructure you control and supports air-gapped and federated deployments, which Slack cannot, but it lacks Slack's app ecosystem and demands more operational effort.

• Governments, defense, and regulated enterprises needing sovereignty
• Organizations requiring air-gapped or on-premises messaging
• Teams that also need customer-facing omnichannel chat

• Small teams that just want simple chat
• Organizations that need Slack's integration marketplace
• Anyone who wants fully open-source features without enterprise licensing