KornShell is described as 'The KornShell language was designed and developed by David G. Korn at AT&T Bell Laboratories. It is an interactive command language that provides access to the UNIX system and to many other systems, on the many different computers and workstations on which it is implemented' and is a Shell in the os & utilities category. There are more than 25 alternatives to KornShell for a variety of platforms, including Linux, Mac, Windows, BSD and iPad apps. The best KornShell alternative is fish, which is both free and Open Source. Other great apps like KornShell are GNU Bourne Again SHell, Zsh, Nu Shell and Elk Shell.