Is Mattermost cloud-based or self-hosted?

Mattermost is offered as both cloud and self-hosted (hybrid) deployment.

What are the downsides of Mattermost?

UI feels dated and less polished than newer collaboration tools Also, Self-hosting adds operational overhead for upgrades, backups, and plugin management

Who is Mattermost best for?

Mattermost is best suited for Defense and National Security Teams, Security Operations Teams, Critical Infrastructure Operators.

What can I use Mattermost for?

Common uses for Mattermost include integrated security operations, out-of-band incident response, self-sovereign collaboration, mission-critical chatops.

What is the best alternative to Mattermost?

Slack is the closest alternative to Mattermost, followed by Microsoft Teams and Discord.

How does Mattermost compare to Slack?

Mattermost and Slack are both used for communication & chat -- specifically team communication tools. See the full side-by-side comparison for pricing and feature differences.

Mattermost: Sovereign Collaboration for National Security

Mattermost is the open-source platform for secure, high-trust collaboration. Used by NASA, Airbus, and the US Department of Defense, Mattermost provides Slack-like collaboration with on-premises deployment for security-conscious teams.

Commonly Cited Strengths & Limitations

Strengths

Stable, flexible, and competitively priced platform
Self-manageable, making it easier to investigate problems
Supports asynchronous and sustainable ways of working

Limitations

UI feels dated and less polished than newer collaboration tools
Self-hosting adds operational overhead for upgrades, backups, and plugin management
Plugin ecosystem and integrations are more limited than Slack or Teams
Mobile app can be clunky and slow, with delayed push notifications and no offline access
Steep learning curve and technical effort required to set up and manage
Lacks built-in video conferencing without external integration
Has user and message limits (which spawned forks like Mostlymatter)

Who is Mattermost for?

Defense and National Security Teams

Militaries and government agencies use Mattermost for sovereign, air-gapped collaboration and command and control across personnel, contractors, and mission partners.

Security Operations Teams

Understaffed security teams use it to streamline incident collaboration and accelerate detection, response, and remediation workflows.

Critical Infrastructure Operators

Critical infrastructure and intelligence enterprises use self-hosted deployments to keep sensitive data controlled and maintain resilience during incidents.

Frequently Asked Questions

Is Mattermost free?

Mattermost offers a free plan, with paid plans starting at Free.

Does Mattermost offer a free trial?

Yes, Mattermost offers a free trial.

Does Mattermost have an API?

Yes, Mattermost provides an API for developers.

What platforms does Mattermost support?

Mattermost is available on Web, iOS, Android, Mac, Windows, Linux, Self-hosted.

What does Mattermost integrate with?

Mattermost integrates with MS Teams, Atlassian, GitLab, Pexip, Fujitsu.

Mattermost

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