matterhorn ☆

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Description:
Unix terminal client for Mattermost

Type: Cask | Latest Version: 90000.1.1@0 | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Productivity

Tags: mattermost chat terminal tui haskell messaging

Install: brew install --cask matterhorn

About:
Matterhorn is a terminal-based user interface for Mattermost, written in Haskell. It provides a lightweight and efficient chat experience directly within the terminal, ideal for developers who prefer keyboard-driven workflows. The client supports core Mattermost features like channels, direct messages, threads, and file uploads without requiring a GUI.

Key Features:

Terminal-based TUI for keyboard-centric navigation
Support for threads, mentions, and file attachments
Minimal resource usage compared to Electron-based clients
Configurable keybindings and themes

Use Cases:

Remote development workflows using SSH and terminal multiplexers
Managing Mattermost communications on headless servers

Alternatives:

mattermost-web – Official web client; requires a browser and more system resources
mattermost-desktop – Official desktop wrapper; provides a GUI experience but is Electron-based

Version History

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