Run Plan 9 in VMWare Fusion (on Mac)
If you’re not familiar with Plan 9 from Bell Labs, its about time you did. Plan 9 is one of the first GUI operating systems, the precursor to most of the experiences that we now take for granted. I knew a bit about it, but I wanted to actually use it. And, not having a computer laying around from the 1980s anymore, the next best thing was a virtual machine.