Nisus Software, Inc.


  • Runs natively on Apple Silicon.

    Requires macOS 10.11 or later.

    Downloads Available:

    Nisus Thesaurus 1.2.1 download download from mirror


    Once extracted, drag Nisus Thesaurus to your Applications folder.

    To enable the thesaurus inside other apps, including Nisus Writer Pro or Nisus Writer Express, you may need to log out or restart your Mac.