A company which developed a NOS (Network Operating System) called Novell Netware. Novell is mainly a network / service company as of now. Novell recently acquired SuSE and Ximian with which they adopt Linux as their core business.
Novell also announced on their annual meeting called Brainshare that iFolder and SuSE's YaST were to be GPLed. Brainshare 2004 ran fully on SuSE Linux as opposed to earlier Brainshare conferences where they ran on Windows computers.
Novell is currently migrating its internal workstations to its own Linux distribution, SUSE Linux.