[pjmlp]

Most of them were fixed in Inferno, but by then most stop paying attention.

To the point even on HN many seem to be unaware that the line ended on Inferno and not Plan9.

[cronjobber]

Personally, I tend to slot Inferno closer to Java than to Plan9, even though I'm clear about the lineage. In that sense, the line of "real" operating systems ended at Plan9.

[pjmlp]

For me it is Inferno.

If you look at the architecture of mobile OSes, they were in the right direction.