Bash and ZSH are Unix shell programs, with Bash created in 1989 by Brian Fox as the Bourne-Again shell under GPLv3, and ZSH created in 1990 by Paul Falstad as Zhong Shao's login shell under an MIT-like license. ZSH offers additional features over Bash such as spelling correction, strong path expansion, shared command history, named directories, suffix aliases, programmable renaming, and extended globbing.

1. BASH vs ZSH
Bash
● 1989
● Brian Fox
● Bourne-Again shell
● GPLv3
Zsh
● 1990
● Paul Falstad
● Zhong Shao's login shell
● MIT-like

2. ZSH Features
● Spelling correction
● Strong path expansion
● Shared command history
● Named directories
● Suffix aliases
● Programmable renaming
● Extended globbing
● etc…