Download of 1Password for Safari 2.22.1 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.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The actual developer of this free software for Mac is 1Password. The software relates to Internet & Network Tools.
From the developer:
1Password for Safari helps you fill and save your passwords. The tool offers an easy way to store and use strong passwords, keeping you safe online. You can now use 1Password in Safari without installing the desktop app. 1Password for Safari is a completely independent extension that provides full access to 1Password’s capabilities.
You may want to check out more Mac applications, such as Safari FIDO U2F, 1Password or Youda Safari, which might be related to 1Password for Safari.