Mattermost 6.3.1

Mattermost for Mac — Instant Messaging.

Mattermost Free 117.04 MB

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What is Mattermost?

Mattermost is a instant messaging app for Mac developed by Mattermost.

Latest version: 6.3.1 (2026-10-14)
Price: Free
Platform: macOS
Size: 117.04 MB

Mattermost technical details

Version	6.3.1
Updated	2026-10-14
Developer	Mattermost
Category	Instant Messaging
License	MIT
Pricing	Free
File size	117.04 MB
File type	ZIP
Operating system	macOS
Languages	English
Content rating	Not specified

SHA-256 (latest file): fcce75e6d28fc569689065d9739b7905119a4009b35e2586b01eea88ad7382f2

Facts verified 2026-10-31 from the official listing. APPDIR does not host installer files; downloads open the publisher's or store's official page.

How to download and install Mattermost on Mac

Open the Mattermost download page on APPDIR.
Choose the official publisher or store link and download the ZIP file.
Open the downloaded file and move the app to Applications. On first launch, confirm it in System Settings › Privacy & Security if macOS asks.
Review the requested permissions and only grant what you need.

Is Mattermost safe?

APPDIR lists metadata and links to official sources only; we never re-host or modify installer files. Compare the SHA-256 hash above with the file you download to confirm it is untouched. The content rating is Not specified. See our security policy for how listings are checked.

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Mattermost FAQ

Is Mattermost free?

Mattermost is listed as Free on Mac.

What is the latest version of Mattermost?

The latest version we verified is 6.3.1, released on 2026-10-14.

How big is Mattermost?

The download is about 117.04 MB (ZIP).