OpenSim is an open source alternative to SimPholders, written in Swift 4.

You can visit the latest release to grab a compiled version. (Warning: It's not code-signed.)

1. Install Homebrew: /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
2. Install Cask: brew install cask
3. Install OpenSim: brew cask install opensim

• Parsing results from xcrun command rather than device_set.plist file (thank @bradvandyk)
• Watch for changes from simulators directory and reload dynamically
• Filter out empty simulators
• Better UI
• Other functionalities like uninstalling apps or resetting data