PSWD 4.1 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. This free Mac application was originally produced by Kerem Erkan. The application lies within Security Tools, more precisely Personal Security.
From the developer:
PSWD is a free utility app that can generate strong random passwords with very comprehensive settings. It is written using Swift programming language. You can use it on both iOS and macOS.
You may want to check out more software for Mac, such as Keychain Minder, Private Contact or Rohos Logon Key, which might be similar to PSWD.