Enterprise Software: Mattermost hosting
Mattermost is the open-source alternative to Slack and Microsoft Teams – a team chat you control entirely yourself. We host Mattermost in a GDPR-compliant way on European infrastructure, so your internal communication runs fast and securely without sensitive conversations sitting on third-party servers. Especially the clean choice for public authorities, healthcare and security-conscious companies.
Challenges you'll recognise
- Your internal communication runs over a US SaaS service, even though sensitive topics are sometimes discussed there.
- The per-user costs of your chat tool rise with the team without you needing more features.
- Compliance requirements demand control over retention and storage location of your messages that your current tool doesn't offer.
Team chat under your own control
Mattermost offers channels, direct messages, file sharing and threads – the functions teams know from Slack. Self-hosted, you decide on retention, access and integrations yourself instead of following the rules of a SaaS provider.
Data sovereignty
Your communication is often more sensitive than you think. Self-hosted Mattermost ensures that messages and files do not leave your infrastructure – a decisive advantage for regulated industries and security-conscious teams.
Installation & integration
We set up Mattermost production-ready, connect it to your single sign-on and your tools and configure channels and permissions. Via integrations and webhooks Mattermost connects with your existing systems.
Updates & support
We keep Mattermost up to date, apply security updates and back up your data. For questions or incidents you have a dedicated contact instead of an anonymous support portal.
Mattermost in action
Team chat with channels, threads and integrations – on your own servers.
Good to know
Communication is sensitive
Internal chats often contain more confidential information than expected. Self-hosting keeps this data under your own control – an advantage that SaaS chats inherently lack.
Popular in regulated industries
Mattermost is used precisely where data protection and sovereignty are mandatory – from the public sector to industry.
Familiar to use
The interface is modelled on established chat tools, so the switch succeeds with little onboarding for your team.
Mattermost vs. Slack & Microsoft Teams
Slack bills per user per month, Teams sits inside Microsoft 365. Mattermost is open source and runs on your infrastructure – with no message limit. As of June 2026.
| Mattermost (self-hosted) | Slack | Microsoft Teams | |
|---|---|---|---|
| Licence | Open source (Free), €0 | Pro / Business+ | Part of Microsoft 365 |
| Price | Fixed ops, user-independent | $7.25–12.50/user/mo | in the M365 plan (~$12.50/user) |
| Cost (50 users) | Unchanged (fixed fee) | ~$360–625/mo | included in the M365 plan |
| Message history | Unlimited (your database) | Plan-dependent | Plan-dependent |
| Data ownership | Your own EU servers | Vendor cloud (US) | Vendor cloud (US) |
Vendor list prices, as of June 2026 (Slack billed annually). Break-even: from roughly 30–50 users, self-hosted Mattermost is usually cheaper than Slack Business+ – plus full data ownership.
Frequently asked questions
Is Mattermost a full Slack replacement?
Who benefits most from self-hosted team chat?
Can we connect Mattermost to our Active Directory / SSO?
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Success you can measure
With us you're always at the forefront of enterprise software development and benefit directly from our extensive development know-how. Together we examine your business processes, identify key optimization potential and develop individually tailored solutions. Your business goals and expectations are the focal point of everything we do.
Comprehensive technological expertise
We choose the stack per project by requirement — established, future-proof technologies instead of niche dependencies.
Specialized in enterprise solutions
Deep integration into ERP, CRM and third-party systems instead of isolated solutions — the real lever lies in clean interfaces.
Years of experience in the software industry
From requirements analysis to operation after go-live — we know the pitfalls of large software projects.
Multidisciplinary expert team
Analysis, architecture, backend and operations from a single source — no friction at the seams between disciplines.
Long-term business success
We build maintainable foundations that grow with your company — and stay by your side with support and further development.
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