Novell actually did port NetWare networking services to Unix in 2005 but by that point it was too late.
There was also a FOSS NetWare server for Linux at the same time too
A source, ironically from Novell docs.
https://www.novell.com/documentation/suse91/suselinux-adming...
It only emulated Netware 2/3, not the later NDS versions.