What is the difference with Slack?

Mattermost is hosted on your own server: your messages stay on your infrastructure, with no history limit and no per-user billing on the Team edition.

What VPS configuration is needed?

2 GB of RAM is enough for a medium-sized team. Plan for more disk depending on the volume of shared files and history.

Does Mattermost have mobile apps?

Yes. Mattermost offers official apps for Windows, macOS, Linux, iOS and Android that connect to your self-hosted server.

Share information and collaborate.

Mattermost

Secure, self-hosted team messaging — the sovereign alternative to Slack and Teams.

2 GB RAM 1 vCPU Port 8065 Available

Source code

Tech stack

DockerGoPostgreSQL

Minimum RAM2 GB

Minimum CPU1 vCPU

Default port8065

Compatible OSubuntu-24.04

Mattermost is an open-source team messaging platform designed as a self-hosted alternative to Slack and Microsoft Teams. Public and private channels, discussion threads, direct messages, file sharing and integrations: everything a team expects, without sending your conversations to a third-party service.

Deployed on your own VPS, Mattermost keeps all your exchanges on your infrastructure — an asset for organizations subject to confidentiality or compliance requirements. The stack (Go server + PostgreSQL) runs in Docker containers and installs in a single step. Desktop and mobile apps, inbound/outbound webhooks and bots let you automate and integrate Mattermost with your tools.

Key features

Public and private channels, discussion threads and direct messages

Desktop apps (Windows, macOS, Linux) and mobile apps (iOS, Android)

File sharing, search and unlimited self-hosted history

Inbound/outbound webhooks, slash commands and bots for automation

SSO authentication (LDAP, SAML, OAuth) in the enterprise edition

Data and backups entirely under your control

When to use this solution?

1

Internal communication

Centralize team exchanges by topic channels, without depending on an external service or history limits.

2

Technical teams

Connect CI/CD, monitoring and alerts via webhooks to receive notifications where the team is already talking.

3

Regulated sectors

Keep all conversations on your infrastructure to meet confidentiality and compliance requirements.

Deploy Mattermost on your VPS

Guide optimized for ServOrbit Cloud VPS.

01

Create the VPS

VPS with 2 GB RAM minimum, Ubuntu 22.04. The "Mattermost" template installs the server and PostgreSQL in containers.

02

First access

Point your domain to the VPS and open http://votre-ip:8065. The first account created becomes the system administrator.

03

Configure the site URL

Set the public URL (Site URL) and enable HTTPS via a TLS certificate before inviting your team.

04

Create teams and channels

Structure your spaces by team then by topic channels, and set the default channels.

05

Invite and integrate

Invite your collaborators and connect your tools (CI, monitoring, tickets) via webhooks and slash commands.

Frequently asked questions

Mattermost is an open-source, self-hosted team messaging platform, an alternative to Slack and Microsoft Teams, with channels, discussion threads and integrations.

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