marble (deprecated)

Install command: 
brew install --cask marble

Name: Marble

https://marble.kde.org/

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

Cask code: marble.rb on GitHub

Current version: 2.2.0

Current version requires: macOS >= 10.11

marble is built for Intel macOS and so requires Rosetta 2 to be installed.
You can install Rosetta 2 with:
    softwareupdate --install-rosetta --agree-to-license
Note that it is very difficult to remove Rosetta 2 once it is installed.

Analytics:

Installs (30 days)
marble 2
Installs (90 days)
marble 12
Installs (365 days)
marble 68