lsub has been doing quite interesting research in extending the UI from the line of plan 9. There is plan B, Olive, Clive.
Honesty questions: When are they going to make these research product usable? Do they plan to ship? What does it take for the masses to adopt such OS/UI?
Those are research projects. Universities are not product incubators. So unless you find someone that takes this into her own hands to make a commercial product out of that, nothing will happen.
Research means nothing… only profit matters!
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All it takes is for somebody to turn them into an actual tool, I mean the plan 9 user space stuff is already very usable, though I’ve never used the lsub stuff. The source code is available: http://lsub.org/ls/projects.html