What are some alternatives?
When comparing zsh and Oh My Zsh, 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.
GNU Bourne Again SHell - Bash is the shell, or command language interpreter, that will appear in the GNU operating system.
Prezto - Prezto is the configuration framework for Zsh; it enriches the command line interface environment...
Xiki - Xiki makes the command line friendlier and more powerful.
zgen - A lightweight plugin manager for Zsh inspired by Antigen. Keep your .zshrc clean and simple.