Mattermost Desktop Offline Installer

Name: Mattermost Desktop
Availability: InStock
Author: Mattermost

Standalone installer · Full setup · Offline installer free download for Windows/macOS/Linux

Communication · v6.1.2 · Open Source

Powerful communication platform that empowers teams to collaborate and communicate

Link checked against Mattermost's official domain on June 14, 2026 (automated check; catalog maintained by Avinash Verma, Editor).

License: Open Source

Size: 120 MB

Platforms: Windows macOS Linux

Updated: Jun 14, 2026

Quick answer: downloading Mattermost Desktop

Mattermost Desktop is a Open Source communication app for Windows/macOS/Linux from Mattermost. Its official offline (standalone) installer is published as a direct MSI download and installs without an internet connection. Always download from the official source (mattermost.com) — we link there directly and never host or modify the file.

Mattermost Desktop Trust & Verification

External authoritative sources that identify and verify Mattermost Desktop.

Wikipedia article Source on GitHub

Mattermost Desktop Offline Installer Downloads

Verified installer files, platform packages, store pages, and browser plugins when available.

Platform	Build	Architecture	Package	Download	Notes
Windows	MSI Mattermost Desktop for Windows (64-bit) MSI	64-bit	MSI	Download	Official direct msi package from Mattermost
Windows	ZIP Mattermost Desktop 6.1.2 Windows x64 ZIP	64-bit	ZIP	Download	Official Mattermost desktop archive
macOS	Universal Mattermost Desktop for macOS (Universal) DMG	Universal	DMG	Download	Official direct dmg package from Mattermost
Linux	Linux archive Mattermost Desktop for Linux (64-bit) TAR.GZ	64-bit	TAR.GZ	Download	Official direct tar.gz package from Mattermost
Linux	Linux archive Mattermost Desktop Linux 64-bit TAR.GZ	64-bit	TAR.GZ	Download	Official direct package from the publisher download page
Android	Google Play Mattermost Desktop Google Play	Not applicable	Store	Download	Official Google Play listing linked from the publisher site
iOS	App Store Mattermost Desktop Apple App Store	Not applicable	Store	Download	Official Apple App Store listing linked from the publisher site

Direct installer links are shown only when verified. Store and browser extension rows open the publisher-controlled official destination.

Source: official offline / standalone installer — the verified file above installs without an internet connection.

We do not host software files on our servers. All download links point to the official developer source or a trusted, verified mirror.

Mattermost Desktop Overview

Mattermost is an open-source team messaging platform, and the desktop app for Windows, macOS, and Linux connects to Mattermost servers. It is often described as a self-hostable alternative to proprietary team-chat tools: organizations can run Mattermost on their own infrastructure for full control over their data, which appeals to teams with strict privacy, security, or compliance requirements. It provides channels, direct messages, threaded conversations, file sharing, search, and integrations, and the desktop client lets you connect to multiple servers at once. The complete installer means Mattermost Desktop sets up without fetching anything online during installation. The link on this page goes to Mattermost's official Mattermost Desktop download.

Mattermost Desktop Preview

Mattermost Desktop Communication preview card — Mattermost Desktop — Communication

Lead card by OfflineInstallerSetup. Logo and screenshots from the publisher's official sources and Wikipedia / Wikimedia Commons under their respective licenses.

Mattermost Desktop Offline Installer Key Features

Desktop client for self-hostable open-source team chat
Channels, direct messages, and threaded conversations
Connect to multiple Mattermost servers at once
File sharing, search, and integrations
Self-hosting gives full control over data

Mattermost Desktop Standalone Installer System Requirements

Baseline requirements to run the current Mattermost Desktop release:

Operating System: Windows 10/11 (64-bit)
Memory (RAM): 2 GB minimum, 4 GB recommended
Disk Space: 500 MB free space
Processor: 1 GHz or faster (64-bit)

How to Install Mattermost Desktop

Follow these steps to install Mattermost Desktop offline on your PC:

1
Download the Mattermost Desktop offline installer from the official source below.
2
Double-click the installer file to launch the installation process.
3
Follow the on-screen instructions to select your installation preferences and complete the setup.
4
Once the installation is finished, you may be prompted to launch Mattermost Desktop immediately.
5
Launch Mattermost Desktop — installation is complete.

Common Mattermost Desktop Installation Issues & Fixes

Ran into a problem? Here are the most common issues and how to fix them:

⚠️

Mattermost Desktop does not start after installation.

✅

Check your system's task manager to see if the application is running in the background. If it is, try restarting your computer. If the issue persists, reinstall the application.