Mattermost

What is Mattermost?

Mattermost is a self-hosted collaboration platform for technical, regulated and security-conscious organizations that need team messaging under their own control. The vendor sells Professional, Enterprise and Enterprise Advanced editions, with options up to air-gapped deployment. Licenses are prepaid annual per-seat subscriptions.

Key features of Mattermost

• Team messaging: Self-hosted collaboration with channels for teams of up to 250 users on Professional.
• SSO and multi-LLM: Professional includes SSO and bring-your-own multi-LLM support.
• Playbooks: Enterprise adds playbooks with automated triggers.
• Federated channels: Enterprise adds federated channels and sovereign agents.
• Hardened deployment: FIPS 140-3 validated images and high-availability clusters up to 50,000 users on Enterprise.
• Air-gapped scale: Enterprise Advanced adds dynamic ABAC, classification banners, air-gapped deployment and scale to 200,000 concurrent users.

How Mattermost works

Organizations deploy Mattermost on their own infrastructure, connect SSO and run channels, playbooks and agents. Each server needs its own license, including federated servers, while a high-availability setup sharing one database counts as one server.

Who uses Mattermost?

Defense, critical infrastructure and regulated enterprises that cannot use public SaaS chat are the core audience. Non-profit, open source and education programs are also available.

Mattermost pricing

Mattermost does not list prices on its pricing page; Professional, Enterprise and Enterprise Advanced are sold by contacting sales. Licenses are prepaid annual per-seat subscriptions. The vendor offers a 1-hour trial environment through its sign-up page, and Premier Support is an add-on.

Mattermost integrations

The vendor's pricing page names SSO and bring-your-own multi-LLM support, but does not list third-party app integrations.

Mattermost alternatives

Slack is the dominant cloud chat product with a large app marketplace but no self-hosting. Microsoft Teams bundles chat, meetings and files within Microsoft 365. Zulip is an open source, threaded chat tool, and Front is a shared inbox for customer teams.