Install Multiple Versions of a Program on MacOS using Homebrew

Homebrew makes it really simple, I mostly use this for installing multiple versions of Python without the added complication of using Docker.

Just install the version of the program/utility/tool you need by specifying it with an @.

brew install python@<version-number>

# For example:
brew install python@3.9
brew install python@3.11

You can then use each version like this:

/opt/homebrew/bin/python3.9
/opt/homebrew/bin/python3.11