zsh - The Z shell (Zsh) is a Unix shell that can be used as an interactive login shell and as a powerful command interpreter for shell scripting.
fish shell - The friendly interactive shell.
Xiki - Xiki makes the command line friendlier and more powerful.
PowerShell Plus - Learn how to learn and master PowerShell fast with an interactive learning center, a powerful IDE, pre-loaded scripts, and a PowerShell Editor… all for free.
Rush - rush is a replacement for the unix shell (bash, zsh, etc) which uses pure Ruby syntax.
KornShell - The KornShell language was designed and developed by David G. Korn at AT&T Bell Laboratories.