signal

Install command: 
brew install --cask signal

Name: Signal

Instant messaging application focusing on security

https://signal.org/

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

Cask code: signal.rb on GitHub

Current version: 7.65.0

Current version requires: macOS >= 11

Versions:

Intel tahoe 7.65.0
sequoia 7.65.0
sonoma 7.65.0
ventura 7.65.0
monterey 7.65.0
big sur 7.65.0

Analytics:

Installs (30 days)
signal 2,623
Installs (90 days)
signal 8,210
Installs (365 days)
signal 34,524