Compare
Mattermost vs Rocket.Chat
Rocket.Chat adds livechat and omnichannel inboxes; both are open source.
Rocket.ChatOpen-source team chat you can self-hostWhich to pick
Pick Mattermost if you want…
- Zero-trust, air-gapped team collaboration
- Self-hosted Slack-style chat for engineering teams
- Integrations with REST API, Webhooks or Slash commands (on Mattermost's list, not Rocket.Chat's)
Pick Rocket.Chat if you want…
- Mission-critical, zero-trust team collaboration
- Self-hosted chat with omnichannel features
- Integrations with Active Directory, LDAP or SAML 2.0 (on Rocket.Chat's list, not Mattermost's)
Mattermost focuses on DevOps and engineering workflows; both are open source.
Side by side
- What it is
- Mattermost:Mattermost is a self-hosted, secure team messaging and collaboration platform for mission-critical workflows.
- Rocket.Chat:Rocket.Chat is an open-source, self-hosted team chat platform for secure messaging, voice, video and collaboration.
- Best for
- Mattermost:Zero-trust, air-gapped team collaboration
- Rocket.Chat:Mission-critical, zero-trust team collaboration
- Who it’s for
- Mattermost:Enterprises, government, and critical-infrastructure teams needing data sovereignty.
- Rocket.Chat:Enterprises, government agencies, defense organizations and any team needing sovereign, compliant communications.
- Pricing
- Mattermost:Contact sales
- Rocket.Chat:Freemium
- Plans
- Mattermost:—
- Rocket.Chat:Starter Free
- Open source
- Mattermost:Yes, 39,261 GitHub stars
- Rocket.Chat:Yes, 46,213 GitHub stars
- Works with
- Mattermost:REST API, Webhooks, Slash commands, Jira, GitHub, GitLab, ServiceNow, PagerDuty
- Rocket.Chat:Active Directory, LDAP, SAML 2.0, OpenID Connect, Matrix protocol, XMPP
Mattermost features
- Secure Messaging & Collaboration. Channel-based chat with searchable history, per-channel permissions, and priority messages.
- Workflow Automation. Playbook-driven incident response, change management and compliance with conditional checklists and SLA timers.
- Human-Machine Teaming. Sovereign AI agents that summarize alerts, act on them, and integrate with any LLM you choose.
- Audio & Screenshare. 1-to-1 and group calls with screen sharing, live transcription and AI summaries on your own calls server.
- Project Management Boards. Kanban, table, calendar and gallery boards linked to conversations for task tracking.
- Federation & Interoperability. Secure message federation across Mattermost servers and real-time bridges to Teams, Matrix and XMPP.
Rocket.Chat features
- Zero-trust security model. Supports air-gapped, on-prem, sovereign cloud and DoD IL6 deployments with end-to-end encryption.
- Unified communications. Combines messaging, voice, video, screen sharing and AI-powered search in one platform.
- Granular access controls. Role-based and attribute-based access control, ABAC, MFA and integration with AD/LDAP/SAML.
- Compliance & audit. Built-in audit logs, tamper-evident records and certifications (ISO 27001, SOC 2, HIPAA, FINRA, NIS2, GDPR).
- Extensible architecture. Open API, custom apps, Matrix federation, XMPP bridge and plugin ecosystem for tailored workflows.
- Mobile & field support. Secure iOS/Android apps with device-level enforcement and remote-wipe capabilities.
Mattermost vs Rocket.Chat FAQ
Is Mattermost or Rocket.Chat free?+
Rocket.Chat has a free plan (Starter) and paid plans.
Is Mattermost or Rocket.Chat open source?+
Yes, both are open source: Mattermost (mattermost/mattermost on GitHub) and Rocket.Chat (RocketChat/Rocket.Chat on GitHub).
Do Mattermost and Rocket.Chat integrate with the same tools?+
Their integration lists don't overlap: Mattermost lists REST API, Webhooks, Slash commands, Jira and 4 more; Rocket.Chat lists Active Directory, LDAP, SAML 2.0, OpenID Connect and 2 more.
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.