What are some alternatives?
When comparing zsh and Bash, you can also consider the following products
fish - The friendly interactive shell.
DASH - DASH is a secure, blockchain-based global financial network which offers private transactions.
Gnome-Pie - Gnome-Pie is a circular application launcher for Linux.
GNU Bourne Again SHell - Bash is the shell, or command language interpreter, that will appear in the GNU operating system.
Plank - Plank is software that provides a very minimalist and simplistic dock for Linux operating systems and also provides a framework and library for creating more advanced docks. Read more about Plank.
Xiki - Xiki makes the command line friendlier and more powerful.