App: Nisus Thesaurus
Developer: Nisus Software, Inc.
Genres: Reference, Education

Nisus Thesaurus is a fast electronic thesaurus that automatically integrates with any service aware application including Nisus Writer Pro, Nisus Writer Express, Apple Mail, Safari, TextEdit, and more.

Release notes:
No functional changes since version 1.2.1.
Now requires macOS 10.15 Catalina or later, due to issues on macOS Mojave.