Rephrase

Mac users who write all day in different apps, such as email, notes or chat, are the people Rephrase is built for.

Rephrase is a macOS writing assistant that fixes grammar, adjusts style and translates text, and it works across applications rather than inside one editor.

You select your text, trigger an action, and keep going without switching windows.

Customizable hotkeys are the main convenience here.

You can set the shortcuts that suit how you work, so a quick grammar pass on an email or a translation of a message to a friend abroad takes a keystroke or two instead of a copy and paste trip to another site.

It also covers paraphrasing, which helps when a sentence is correct but reads awkwardly.

Rephrase says it prioritizes user privacy, which matters when you are running personal or work messages through a writing tool.

Full functionality sits behind a subscription, and the app is macOS only, so Windows and Linux users are out of luck.