There are many alternatives to PWGen (Password Generator) for Mac if you are looking for a replacement. The best Mac alternative is secpwgen, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to PWGen (Password Generator) and six of them are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to PWGen (Password Generator) are Hawkpass (Free, Open Source), APG (Automated Password Generator) (Free, Open Source), makepasswd (Free, Open Source) and Doorman (Free).
Hawkpass is an open-source Diceware based password generator that uses your mouse movements to generate secure easy-to-remember passwords. Available freely online, as a self-hosted web app or as a desktop app built with Electron.
makepasswd generates true random passwords by using the /dev/urandom feature of Linux, with the emphasis on security over pronounceability. It can also encrypt plaintext passwords given on the command line.