Microsoft Outlook Calendar - Calendar is a time-management web application by Microsoft.
Lightning Calendar - Organize your life — it’s about time!
Calendar by Designs.ai - A complete calendar of all social media holidays.
Google Calendar - Spend less time managing your day & more time enjoying it
Simple Calendar - A simple calendar with events (optional recurring and reminders), week numbers and a customizable...
Rainlendar - Rainlendar - Customizable desktop calendar