NetWare is a computer network operating system developed by Novell, Inc. It initially used cooperative multitasking to run various services on a personal computer, using the Internetwork Packet Exchange (IPX) network protocol. It is hardware-independent, running on any suitable Intel-based PC compatible system, and a wide range of network cards. Products inclue NetWare Directory Services (NDS), a global directory service similar to Microsoft's Active Directory; GroupWise, an email system; ZENworks, an application configuration suite; and BorderManager, a security product. Open Enterprise Server, the current iteration, runs on a SUSE Linux Enterprise Server.