Whilst the aforementioned 205-page collection of software copyright licences is a good contender for the most bizarre software-related thing to be found in the #EpsteinFiles, I think that the one still in the lead at this point is the 1-page single document that talks about #cygwin .
https://www.justice.gov/epstein/files/DataSet%209/EFTA00503280.pdf
I've not found anything for Interix, AIX, HP-UX, the Korn shell, DR-DOS, Xenix, or PC-DOS.
π΅ 



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