RubyMotion MacFuse sample app. This demonstrates creating user-space file systems in Ruby via RubyMotion.
Running this requires FUSE for macOS installed. Installing that package will install a framework in /Library/Frameworks/OSXFUSE which the sample app embeds.
It should be able to be run as simply as:
rake
...which will launch as a System Toolbar app, putting an icon in the toolbar.
The app is derived from a FUSE sample filesystem which is under the Apache 2.0 license.
The disc image in resources/disc-drive.png is not an open source icon, it's from the brilliant Symbolicons Pro set.
Don't hesitate to open an issue if it's not working, or there's a problem.
Enjoy creating filesystems in Ruby!