Ted Nelson's books Computer Lib / Dream Machines, and Literary Machines are interesting and unconventional, but hard to find now.
As for Xanadu, the classic Wired aricle The Curse of Xanadu [1] is still well worth a read. I'm not sure his vision was something that would have ever succeeded, but he at least posited an alternative to what we have now.
Ted Nelson's books Computer Lib / Dream Machines, and Literary Machines are interesting and unconventional, but hard to find now.
As for Xanadu, the classic Wired aricle The Curse of Xanadu [1] is still well worth a read. I'm not sure his vision was something that would have ever succeeded, but he at least posited an alternative to what we have now.
[1] https://www.wired.com/1995/06/xanadu/
Edit to add that I've used the term "rabid prototyping" a few times over the years, and skimming that wired article reminds me where I stole it from.