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🖥️Self-Hosting & Servers · Team ChatOpen SourceFreemium
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Rocket.Chat

Open-source team chat you can host yourself — even air-gapped, with federation, omnichannel and governance built in

Website:https://www.rocket.chat/
Pricing:Freemium — free self-managed community workspace; paid plans for scale & compliance
License:MIT (core); proprietary enterprise features
Platform:Web, Windows/macOS/Linux desktop apps, iOS & Android apps, REST API
Hosting:Self-hosted (Docker/Kubernetes) or SaaS; air-gapped deployments supported
Account:Required
Source:Repository ↗
Added:2026-10-14
Last verified:October 2026
Visit website ↗Source code
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Website: https://www.rocket.chat/ · Source: GitHub · Type: Open-source company (Brazilian roots), free community edition + commercial plans

Why it exists

Team chat is the most intimate business data there is — decisions, half-finished thoughts, client details — yet the default is handing it to a foreign SaaS forever. Rocket.Chat is the open-source counterfactual: a mature, full-featured chat platform you deploy on your own metal, hardened over a decade of public-sector and defense deployments. Its niche is hard to copy: it runs air-gapped (no internet at all), federates with other instances, and markets itself as a "Secure CommsOS" with WCAG 2.1 AA accessibility for regulated procurement.

Main features

  • Full team chat — channels, threads, direct messages, file sharing, voice/video calls, screen sharing, mobile & desktop apps.
  • Deploy anywhere — cloud, on-premises, or fully air-gapped installations; Docker/Kubernetes packaging with an ops-friendly release cadence.
  • Federation — interoperate with other Rocket.Chat servers (and via bridges with the wider mess world), so chat can span organizations without a shared vendor.
  • Omnichannel — turn the instance into a customer contact center: livechat widget, email, SMS and social channels in one inbox.
  • Governance & compliance — conversation monitoring, retention policies, audit, access controls, E2E encrypted rooms on paid tiers.
  • Extensible — REST API, livechat SDK, apps marketplace, and custom theming.
  • AI, your way — privacy-first AI assistant integration that can point at your own on-prem models.

Who it's for

  • Organizations that must keep chat inside their walls: government, defense, healthcare, critical infrastructure.
  • Companies leaving Skype for Business Server, Slack pricing, or a SaaS vendor they can't verify.
  • Self-hosters who want Discord-shaped chat for their community under their own domain.
  • Teams needing one platform for internal chat and customer-facing support (omnichannel).

How it compares

  • Slack / Microsoft Teams — more polish, zero sovereignty; Rocket.Chat answers with federation, air-gapping and your own compliance regime.
  • Matrix (via Disroot or self-hosted) — the open protocol route: more decentralized by design, Rocket.Chat is more turnkey and business-shaped.
  • Mattermost — the closest rival: similar self-hosted positioning; Rocket.Chat distinguishes on federation and omnichannel breadth.
  • Zulip — better threading model for async; Rocket.Chat is stronger on calls, channels and contact-center features.

Notes

  • The community edition is genuinely usable for a team or community server; enterprise features (E2E rooms at scale, advanced audit, scalability options) sit behind paid plans.
  • The core repo is MIT but portions are proprietary — the LICENSE file spells out the split; check it before planning a fork.
  • Resource-hungry compared to lighter chat servers: budget RAM and a proper MongoDB deployment for larger teams.
  • If your need is protocol-level decentralization across many orgs, evaluate Matrix first; if your need is one org, own infrastructure, Rocket.Chat is the smoother ride.