Download of StrongPassword 1.5 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The program is categorized as Security Tools. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
StrongPassword is a simple utility that painlessly generates random passwords. It is designed to be used with a password manager. 1Password, Dashlane, or LastPass are common examples.
The generated passwords can be have variable length and character sets. The strength indicator provides an easy to read gauge of quality.
You may want to check out more software for Mac, such as Secret Folders, Ghost or Password Repository, which might be related to StrongPassword.