Mattermost

Mattermost 6.3.1

Access your Mattermost instance with your credentials using the desktop app

  • By Mattermost, Inc.
  • Open Source
  • Updated Oct 15, 2026
Download for Windows

About Mattermost

Access your Mattermost instance with your credentials using the desktop app

What's new in 6.3.1

Mattermost Desktop v6.3.1 has been cut!
Release notes can be found here: https://docs.mattermost.com/install/desktop-app-changelog.html
The download links can be found below.
Windows - installer files
- https://releases.mattermost.com/desktop/6.3.1/mattermost-desktop-6.3.1-win-x64.msi
- SHA-256 Checksum: 5f47b75874680f944539f4c33be60de83a4572180fe0a40848669932db88d2b8
- https://releases.mattermost.com/desktop/6.3.1/mattermost-desktop-6.3.1-win-arm64.msi
- SHA-256 Checksum: d771ad11cbf9d1814465f2459a49962651e3ea5e88ed1b0619de08cb94119084
Windows - zip files
- https://releases.mattermost.com/desktop/6.3.1/mattermost-desktop-6.3.1-win-x64.zip
- SHA-256 Checksum: 6fff38bd3981c7a9c65bec6e266b8d4209aef7abe35c691c901133a577557294
- https://releases.mattermost.com/desktop/6.3.1/mattermost-desktop-6.3.1-win-arm64.zip
- SHA-256 Checksum: d4a9fabcd46d5d59600e9949a8f96dc86f75f49c2350229bb88153d93a25bf2c
Mac
- https://releases.mattermost.com/desktop/6.3.1/mattermost-desktop-6.3.1-mac-universal.dmg
- SHA-256 Checksum: 5a0c2f202f56ef7d3a1d5a013aafce2f8728af42b08f62c5bd8ab080a94b1ab4
- https://releases.mattermost.com/desktop/6.3.1/mattermost-desktop-6.3.1-mac-x64.dmg
- SHA-256 Checksum: f917447231bbee72508ab43192c77548ddd5ba2e20f850089211fc2585e07587
- https://releases.mattermost.com/desktop/6.3.1/mattermost-desktop-6.3.1-mac-arm64.dmg
- SHA-256 Checksum: ae03f4bc7875a42705b1e7b797cb605ea4204d49c65f12f0b3b8821177852bf1
Linux
- https://releases.mattermost.com/desktop/6.3.1/mattermost-desktop-6.3.1-linux-arm64.tar.gz
- SHA-256 Checksum: b761979cbaad272e0142ed378a9bdaaceeed399a8686ade7841ea35a4e6dd01f
- https://releases.mattermost.com/desktop/6.3.1/mattermost-desktop-6.3.1-linux-x64.tar.gz
- SHA-256 Checksum: 1f17952e689bab2e545d181958e6e5f8b12544f3a9530f537f9be08d41376a69
Linux (Unofficial) - deb files
- https://releases.mattermost.com/desktop/6.3.1/mattermost-desktop_6.3.1-1_arm64.deb
- SHA-256 Checksum: 11716e990a627afc210df217e8ece7fd6a83ce04493c0fd780e0e8956f4160d1
- https://releases.mattermost.com/desktop/6.3.1/mattermost-desktop_6.3.1-1_amd64.deb
- SHA-256 Checksum: 62ad18cf1b85023ce8992d83b207a74f17ac0d58281cf479db5b0aba4e088a3b
Linux (Unofficial) - rpm files (beta)
- https://releases.mattermost.com/desktop/6.3.1/mattermost-desktop-6.3.1-linux-aarch64.rpm
- SHA-256 Checksum: 9b6bdbf9630fd42f9c22f685db2df4f1de0a26734705e8e3b55667b0dfa59f76
- https://releases.mattermost.com/desktop/6.3.1/mattermost-desktop-6.3.1-linux-x86_64.rpm …

Full release notes »

Technical details

PublisherMattermost, Inc.
Version6.3.1
Release date2026-10-15
LicenseApache-2.0
Installer typewix
Architecturex64, arm64
Package IDMattermost.MattermostDesktop

Links & install command

Install Mattermost from the command line with Windows Package Manager (winget):

winget install --id=Mattermost.MattermostDesktop -e

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Older versions

  • 6.3.0
  • 6.2.2
  • 6.0.4
  • 6.0.3
  • 6.0.2
  • 6.0.1
  • 6.0.0
  • 5.13.2
  • 5.13.1