A command line release of $HUSH is now out for macOS. See this post on our forum for full instructions to download and install it:
https://forum.myhush.org/t/command-line-hush-for-mac-now-released/122
The experimental GUI shown here will be available for download soon, so watch this space!
Follow me, Axel, Demartini and Matthew if you want to read more about HUSH and our development here on Steemit.