opensim (deprecated)

Install command: 
brew install --cask opensim

Name: OpenSim

Open-source alternative to SimPholders, written in Swift

https://github.com/luosheng/OpenSim/

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

Cask code: opensim.rb on GitHub

Current version: 0.4.3

Current version requires: macOS >= 10.11

opensim 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)
opensim 29
Installs (90 days)
opensim 84
Installs (365 days)
opensim 337