cryptographic software libraries for client and server security Network switching subsystem, a component of the mobile-phone network Novell Storage Services, a file system used by the Novell NetWare operating system NSS, a 1958 computer chess program Other uses in science and technology Neurological soft signs, signs of disturbance in neurology Neutral salt spray, a salt spray test to qualify the corrosion resistance of coatings on metal Normal saline solution, in medicine Other uses Naked short selling, a restricted practice in stock trading Nostalgia Super Stock, a drag racing class See also NS (disambiguation)