Rocket.Chat

Rocket.Chat is an open‑source communications platform built in TypeScript that emphasizes data protection and control. It offers real‑time messaging, voice and video calls, and screen sharing, with optional end‑to‑end encryption, role‑based access control and identity management. The system can be deployed on‑premises, in secure clouds, or in air‑gapped environments, allowing organizations to keep all data within their own infrastructure.

The platform targets teams and agencies that require high security, such as defense, intelligence, critical infrastructure and other mission‑critical operations. It supports federated communication across separate workspaces, extensibility through a public marketplace and custom apps, and integration with external systems via its Apps‑Engine. Deployment options include Docker, Podman, Kubernetes and a launchpad tool for quick setup.

Rocket.Chat is released under the MIT license, is self‑hostable and free to use without subscription, and is positioned as a secure alternative to services like Slack or Gitter.im. Its architecture is designed for operational resilience, zero‑trust security, and compliance with strict data‑sovereignty requirements.