Ross ROSS = Recommend OSS · open-source software intelligence for agents

matterhorn-chat/matterhorn

A feature-rich Unix terminal client for the Mattermost chat system observed · 2026-08-28

github.com/matterhorn-chat/matterhorn · Haskell · BSD-3-Clause (permissive) observed · 2026-08-28

Health v2 · maintenance only

71/100

  • Activity 99
  • Release rhythm 19
  • Longevity 100
How is this computed?

round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.

  • gap_med: 211
  • age_days: 3666
  • days_rel: 329
  • days_push: 8
  • n_releases_24m: 2

Full methodology

Adoption not part of the score

1152 stars · 81 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Matterhorn is a feature-rich terminal (TUI) client for the Mattermost chat system, written in Haskell using the brick library. It supports message posting and editing, threads, multiple teams, markdown rendering, emoji reactions, and keybinding customization.

Use cases

  • use mattermost from the terminal
  • chat on mattermost without a browser
  • tui chat client for mattermost
  • read and post mattermost messages over ssh
  • manage mattermost channels from the command line

When to choose

  • you live in the terminal and use Mattermost
  • you need a lightweight, keyboard-driven Mattermost client
  • you want to access Mattermost over SSH on remote machines

When to avoid

  • you need a graphical interface with rich media previews
  • you use a chat platform other than Mattermost
  • you need mobile access

Facets

application · maturity active

chat-interface terminal-ui http-client messaging-platforms developer-tools cli cross-platform mattermost tui haskell chat-client brick command-line linux macos

1 source

Member repositories

RepositoryRoleHealth v2
matterhorn-chat/matterhornmain71

For agents

markdown · JSON · MCP: product_card(name="matterhorn-chat/matterhorn")

Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem