messenger

Install command: 
brew install --cask messenger

Name: Facebook Messenger

Native desktop app for Messenger (formerly Facebook Messenger)

https://www.messenger.com/desktop

/api/cask/messenger.json (JSON API)

Cask code on GitHub

Current version: 155.22.218,380205507

Analytics:

Installs (30 days)
messenger 482
Installs (90 days)
messenger 1,629
Installs (365 days)
messenger 6,786
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