Download of Grammarian 2 2.1 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. Grammarian 2 for Mac is included in Productivity 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:
Grammarian 2 is a grammar checker you can use with most system software on your computer, whether it has a built-in grammar checker or not. Grammarian can check grammar mechanics, punctuation, and phrase usage in either an interactive (as you finish a sentence) or batch (user selected text) mode.
You may want to check out more Mac applications, such as Grammarian PRO2 X or Grammarian PRO3, which might be related to Grammarian 2.