Mattermost Desktop

Mattermost Desktop is an open-source communication application for Linux. It provides access to Mattermost conversations for teams that need to coordinate work through a shared platform. Users can participate in private groups, direct one-to-one conversations, or discussions involving an entire team.

The application supports sharing and viewing image files within conversations. It also includes audio sharing and screen sharing for collaboration between participants. Mattermost provides workflow automation and project management capabilities alongside team messaging.

Mattermost is intended for technical and operations teams managing collaborative workflows where clear communication is important. It can connect in-house systems through webhooks and Slack-compatible integrations. Governments, banks, and technology companies use the platform for secure collaboration and to help reduce risks and errors in technical work.

MirrorNest lists Mattermost Desktop for Linux in the Communication category. MirrorNest mirrors the official build directly onto its own storage and scans it for malware before publishing. The application requires a Mattermost server URL, so using the desktop client depends on access to a Mattermost server.