Zsh is available from the following HTTP and anonymous FTP site.
ftp://ftp.zsh.org/pub/
https://www.zsh.org/pub/
The up-to-date source code is available via Git from Sourceforge. See
https://sourceforge.net/projects/zsh/
for details. A summary of
instructions for the archive can be found at
https://zsh.sourceforge.io/
.