Overall Softora score
"An open-source, self-hosted team messaging platform with channels, integrations, and compliance features for teams that need full data control."
Try MattermostPricing
Free + paid; confirm current tiers, usage limits, and add-ons before buying.
Plan details vary by tier
Reliability
Reliable
1-14 days
Ease of use
Good
Very Good
Why we love it
- Fully open-source and self-hostable - deploy on your own servers with complete control over data, security policies, and compliance requirements.
- Slack-compatible interface with channels, threads, reactions, file sharing, and search that requires minimal retraining for teams switching from Slack.
- Deep DevOps integrations including Jira, GitLab, GitHub, Jenkins, PagerDuty, and custom webhooks for development workflow automation.
What to watch for
- Self-hosting requires server administration expertise - provisioning, updates, backups, and monitoring are your team's responsibility.
- The free Community edition lacks some enterprise features like guest accounts, compliance exports, and advanced permissions.
- Mobile and desktop apps exist but feel less polished than Slack's native applications, especially for push notification reliability.
Who should buy Mattermost?
Who should skip Mattermost?
What is Mattermost?
Every team communication platform asks you to trust a third party with your messages, files, and conversations. For most teams, that trade-off is acceptable - Slack and Microsoft Teams handle security and compliance well enough. But for organizations in regulated industries, government agencies, defense contractors, and teams with strict data sovereignty requirements, 'well enough' is not sufficient. Mattermost exists for these teams - providing a Slack-like messaging experience that runs entirely on your own infrastructure, where every message, file, and metadata record stays within your security perimeter.
The self-hosting model is Mattermost's defining characteristic. Deploy with Docker Compose for small teams, Kubernetes for large-scale production, or traditional server installations for air-gapped environments that cannot connect to the internet. Your database (PostgreSQL or MySQL) stores all messages. Your file storage (local disk, S3, or MinIO) holds all uploads. Your authentication system (LDAP, Active Directory, SAML, or OAuth) controls access. No data ever leaves your infrastructure unless you explicitly configure external integrations. For teams that have evaluated Slack vs Microsoft Teams and found that neither meets their compliance requirements, Mattermost provides the third option that keeps data under organizational control.
The DevOps integration story is where Mattermost differentiates beyond just being 'self-hosted Slack.' Native plugins for Jira, GitLab, GitHub, Jenkins, and PagerDuty bring development workflow notifications directly into team channels. Create Jira tickets from messages, receive pull request notifications, trigger CI/CD pipelines, and manage on-call incidents without leaving the chat interface. The Playbooks feature adds structured incident response workflows with checklists, status updates, assigned tasks, and automated retrospectives - turning Mattermost from a simple chat platform into an operational command center. Teams building their startup tech stack with DevOps-heavy workflows will find that Mattermost's developer integrations are deeper than what Slack offers natively.
The Boards feature (based on Focalboard, another open-source project from Mattermost) adds kanban boards and project tracking directly within the messaging platform. While it does not replace dedicated project management tools, having lightweight task tracking inside the communication platform reduces context-switching for teams that manage simple projects alongside their daily conversations. Combined with the Playbooks feature for structured workflows and the plugin system for custom automation, Mattermost evolves from a chat tool into a development collaboration hub.
Key Features
Self-Hosted Deployment
Deploy on your own infrastructure with Docker, Kubernetes, or bare metal for complete data sovereignty and compliance control.
Channels & Threads
Organized team communication with public and private channels, threaded replies, and message pinning for context.
DevOps Integrations
Native integrations with Jira, GitLab, GitHub, Jenkins, and PagerDuty for development workflow automation.
Playbooks
Structured incident response and repeatable workflows with checklists, status updates, and retrospective templates.
Plugin System
Extensible architecture with community and custom plugins for bots, slash commands, and workflow automation.
Compliance & Security
Message retention, e-discovery, audit logs, SSO/SAML, LDAP integration, and granular permission schemes.
Pricing & Plans
| Plan | Starting price | Target audience | Action |
|---|---|---|---|
Free Community edition | Free forever | Small teams and open-source enthusiasts | View plan |
ProfessionalRecommended Business teams | $10/user/mo | Teams needing SSO, guest accounts, and compliance | View plan |
Enterprise Large orgs | Custom | Organizations with advanced compliance and scale needs | View plan |
Cloud Hosted option | From $10/user/mo | Teams wanting Mattermost without self-hosting | View plan |
When Mattermost Is the Right Choice - and When It Is Not
Mattermost is the right choice when data sovereignty is non-negotiable - regulated industries (healthcare, finance, defense), government agencies, or organizations with strict data residency requirements that prevent using US-hosted cloud services. It is also compelling for development teams that want deep DevOps integrations, incident management workflows, and the ability to customize the platform through plugins and open APIs. If your team has the infrastructure expertise to manage a self-hosted deployment and values control over convenience, Mattermost delivers a messaging platform that no cloud-only competitor can match on security and customization.
Mattermost is not the right choice for teams that want zero-maintenance communication. Self-hosting means your team handles updates, backups, monitoring, and troubleshooting. The cloud-hosted option eliminates this burden but also removes the primary advantage of data sovereignty. Small teams without DevOps expertise will find Slack or Discord easier to adopt and maintain. The mobile experience, while functional, lacks the polish of Slack's native apps - push notifications can be inconsistent, and offline message sync is less reliable. Teams that primarily need video meetings should look at Zoom or Google Meet instead, as Mattermost's voice and video capabilities require third-party plugins.
Mattermost earns an 8.3 out of 10 Softora score because it provides a genuinely open-source, self-hostable team messaging platform with enterprise compliance features, deep DevOps integrations, and extensibility that cloud-only platforms cannot offer. The Slack-compatible interface minimizes retraining, and the Playbooks feature adds structured workflows beyond basic chat. The main limitations are self-hosting complexity, a smaller plugin ecosystem compared to Slack, less polished mobile apps, and the need for third-party solutions for voice and video calling. For teams that need data sovereignty and DevOps-centric communication, Mattermost fills a gap that no competitor addresses as comprehensively.
Teams already using automation tools can connect Mattermost through incoming and outgoing webhooks - routing CRM notifications to specific channels, forwarding customer support tickets to on-call engineers, or triggering deployment pipelines from slash commands. The open API makes Mattermost particularly well-suited for teams that treat communication infrastructure as code rather than a managed service.
Final Verdict
Choose Mattermost if your organization needs self-hosted team messaging with full data sovereignty, compliance controls, and deep DevOps integrations. Start with the free Community edition on Docker to evaluate the platform, then upgrade to Professional for SSO, guest accounts, and compliance features as your needs grow. Pair Mattermost with project management tools for task tracking, SEO and analytics platforms for performance monitoring alerts, and use the plugin system to build custom workflows that match your team's specific operational patterns. Browse the full Team Communication category for alternatives if self-hosting is not a priority.
Buyer checklist before choosing
Pricing watchouts
Score Breakdown
Ease of use
Designed to keep the primary workflow approachable.
Self-Hosted
Strong performance around self-hosted.
Value
Value depends on plan fit, usage limits, and team size.
Integrations
Review native integrations before relying on workarounds.
Mattermost Pros and Cons
Fully open-source and self-hostable - deploy on your own servers with complete control over data, security policies, and compliance requirements.
Slack-compatible interface with channels, threads, reactions, file sharing, and search that requires minimal retraining for teams switching from Slack.
Deep DevOps integrations including Jira, GitLab, GitHub, Jenkins, PagerDuty, and custom webhooks for development workflow automation.
Enterprise compliance features including message retention policies, e-discovery, audit logs, SSO/SAML, and LDAP/AD integration.
Extensive plugin system and open API that lets teams build custom integrations, bots, and slash commands tailored to specific workflows.
Self-hosting requires server administration expertise - provisioning, updates, backups, and monitoring are your team's responsibility.
The free Community edition lacks some enterprise features like guest accounts, compliance exports, and advanced permissions.
Mobile and desktop apps exist but feel less polished than Slack's native applications, especially for push notification reliability.
Smaller ecosystem of third-party integrations compared to Slack's app directory with thousands of pre-built connectors.
Real-time voice and video calling requires additional configuration with third-party plugins like Jitsi or Zoom integration.
Implementation plan
Assign an internal owner for setup, data import, permissions, reporting, and adoption.
Import a small sample dataset before migrating the full workspace.
Create one dashboard or report that leadership will review every week.
Invite a small pilot group first, collect objections, and adjust templates or fields before full rollout.
Schedule a 30-day review to decide whether to expand, downgrade, or switch tools.
Top Alternatives
Slack
A mature team chat platform with channels, integrations, search, workflows, and strong everyday adoption.
Full ReviewMicrosoft Teams
Chat, meetings, files, and collaboration tightly connected to Microsoft 365 for organizations already using it.
Full ReviewZoom
Reliable video meetings, webinars, recordings, and collaboration tools for customer and internal calls.
Full ReviewHelpful Softora links
Common FAQs
Is Mattermost a good Slack alternative?
Do I have to self-host Mattermost?
Can Mattermost handle enterprise-scale teams?
Is Mattermost worth it?
Who should use Mattermost?
What are the best Mattermost alternatives?
How should I test Mattermost before buying?
Ready to compare Mattermost?
Review current pricing, confirm plan limits, and compare it against nearby Team Communication options before you commit.