A lightweight option that replaces your wallpaper with an interactive grid. You can record appointments by double-clicking directly on your desktop, making it incredibly convenient for quick notes. It is available for Windows and Mac .

A highly customizable, "widget-style" calendar that stays visible on your desktop without getting in the way. It works across Windows, Mac, and Linux .

Available on the Microsoft Store , this app is popular for its ability to sync multiple accounts (Google, Outlook, iCloud, Yahoo) into a single, clean overview.