: If you don't want to install extra software, you can set alerts directly in the built-in Calendar app by clicking a date and selecting the "Reminder" option.

: A top-rated choice for 2026, specifically praised for its ability to organize chaotic schedules with lists and calendar views.

: The best free choice for users already in the Microsoft 365 ecosystem. It offers recurring reminders, file attachments, and seamless sync with Outlook.

: A lightweight, intuitive program designed purely for reminders. It runs silently in the system tray and provides punctual pop-up windows.