mattermost

Install command: 
brew install --cask mattermost

Name: Mattermost

Open-source, self-hosted Slack-alternative

https://mattermost.com/

Development: Pull requests

Cask JSON API: /api/cask/mattermost.json

Cask code: mattermost.rb on GitHub

Current version: 6.2.2

Requirements: macOS >= 12

Platform variations (supported platforms not listed here use the current version above):

Intel golden gate 6.2.2
tahoe 6.2.2
sequoia 6.2.2
sonoma 6.2.2
ventura 6.2.2
monterey 6.2.2
Linux x86_64 6.2.2
ARM64 6.2.2

Analytics:

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Installs3201,1124,531