Netware Networks

Linux has full support for the IPX/SPX Protocol
Mars_NWE (open source) emulates a Netware 3.12 server for file and print sharing
Caldera Systems offers a commercial product called Netware for Linux which offers full Netware 4.1-compatible file and print services, including a full, Novell-licensed Netware Directory Services (NDS) implementation.

Linux has full support for the IPX/SPX Protocol