Wikipedia
Excelan was a computer networking company founded in 1982 by Kanwal Rekhi, Inder Singh and Navindra Jain. Excelan was a manufacturer of smart Ethernet cards, until the company merged with, and was acquired by Novell in 1989. The company offered a line of Ethernet "front end processor" boards for Multibus, VMEbus, Q-Bus, Unibus, and IBM AT Bus systems. The cards were equipped with their own processor and memory, and ran TCP/IP protocol software that was downloaded onto the cards from the host system. Excelan offered software that integrated the cards into a variety of operating system environments, including many flavors of UNIX, RSX-11, VMS, and MS-DOS. The hardware and software were sold under the "EXOS" brand. In 1987, Excelan also acquired Kinetics, a small networking company that manufactured and sold a variety of Ethernet networking products for Apple Macintosh environments, most notably an AppleTalk-to-Ethernet gateway called the FastPath.
Excelan also manufactured and sold Ethernet network analyzer products, the first being the Excelan Nutcracker, followed later by the Excelan LANalyzer.