Mattermost is an open core, self-hosted team-collaboration platform for channel-based messaging with voice calling, screen sharing, and workflow automation. It serves organizations that must keep message history on their own infrastructure, especially ops and incident-response teams, as an alternative to Slack.[1]
Quick verdict
Teams that must keep messaging inside their own boundary get the most from Mattermost: channel chat with voice, screen sharing, and workflow automation, deployed as a single Linux binary on your own infrastructure with monthly MIT releases. The decisive constraint is operations: hosting, updates, and backups are yours, and advanced tiers are commercial, so teams wanting zero-ops hosted simplicity should choose the hosted incumbent Slack instead.[1]
Key features
Channel chat with calls and automation Channel-based team chat positioned as an open core, self-hosted collaboration platform: chat plus workflow automation, voice calling, screen sharing, and AI integration.[1]
Self-hosted single-binary deployment Self-hosted deployment as a single Linux binary on PostgreSQL, installable via Docker, Ubuntu, tar, Kubernetes, or Helm, with on-premises as the primary path.[1]
Voice calling and screen sharing Voice calling and screen sharing built into the platform, so teams can move from text to a live call without a separate meeting product.[1]
Workflow automation for ops teams Workflow automation for operational use cases including DevSecOps, incident resolution, and IT service desk work.[1]
Native desktop and mobile clients Native clients beyond the web interface: Android, iOS, Windows, macOS, and Linux apps for distributing to the whole team.[1]
APIs, webhooks, and plugins Documented extension points for integrations: APIs, webhooks, slash commands, apps, and plugins, with developer documentation for building on the platform.[1]
Open core Go and React stack Open core codebase in Go and React with a new compiled MIT-licensed release every month, so teams can read the source and run reviewed builds themselves.[1]
Cloud trial before self-hosting Cloud trial for evaluation alongside the self-hosted path, so a team can try the product before committing infrastructure to it.[1]
Who will love it
Regulated organizations that must keep message history inside their own boundary: the self-hosted editions keep chat, calls, and data on infrastructure you control.[1]
Ops and incident-response teams: the DevSecOps, incident resolution, and service-desk positioning plus workflow automation fit teams that coordinate response in chat.[1]
Teams leaving per-seat SaaS billing for chat: the open core edition with monthly MIT releases means messaging you can run and back up yourself.[1]
Who should avoid it
Teams wanting zero-operations hosted simplicity: deploying, updating, backing up, and securing the server are all yours, so a hosted incumbent fits better.[1]
Organizations wanting every advanced control in the free tier: it is open core, so paid Professional and Enterprise tiers gate support and advanced features behind quoted pricing.[1][2]
Teams with no infrastructure capacity: Mattermost assumes you can run PostgreSQL, manage upgrades, and distribute clients, which is real ongoing work.[1]
Alternatives and compatibility
Slack is the published catalogue incumbent: choose Slack for hosted ease with support, or Mattermost when message history must stay on your own infrastructure.[1]
Adopt with the open-core structure in view: the core is open with monthly MIT releases, while advanced tiers are commercial, so confirm the edition matrix covers your compliance needs before committing.[1]
Integration surface is documented for both builders and operators: APIs, webhooks, slash commands, apps, and plugins connect chat to surrounding tooling without forking the platform.[1]
Questions worth asking
What is the best Mattermost alternative for non-technical users?
Slack is the safer pick for non-technical users: it is the hosted incumbent in Mattermost's published catalogue relationship, with onboarding and support, while Mattermost's self-hosted editions leave hosting, updates, and backups to you.[1]
Is Mattermost really no-code?
Mostly. Day-to-day chat, calls, and administration are visual and need no code, but running the self-hosted server is operations work, and programmatic use goes through APIs, webhooks, and plugins.[1]
How much does Mattermost cost per month?
Can you self-host Mattermost?
Yes. It is built for self-hosting: a single Linux binary on PostgreSQL, installable via Docker, Ubuntu, tar, Kubernetes, or Helm, with on-premises deployment as the primary path. You own hosting, updates, and backups; a cloud trial exists for evaluation.[1]
Sources and editorial review
Source research. Reviewed on October 9, 2026. Written by Sanjib Sah. AI assisted; reviewed by a human editor.
We have not run or tested this product.
- Mattermost repository README (official)
official · Observed October 9, 2026
Official repository README: open core self-hosted collaboration platform with chat, workflow automation, voice calling, screen sharing, AI integration; Go and React, single Linux binary on PostgreSQL, monthly MIT compiled releases; deploy on-premises or cloud trial; DevSecOps, incident resolution, IT service desk use cases; Docker, Ubuntu, tar, Kubernetes, Helm installs; native Android, iOS, Windows, macOS, Linux clients; APIs, webhooks, slash commands, apps, plugins with developer docs.
- Mattermost pricing (official)
official · Observed October 9, 2026
Official pricing page: team collaboration editions with Professional and Enterprise tiers and sales contact for quoted plans; confirms commercial tiers above the self-hosted open core edition.