Google Calendar - Spend less time managing your day & more time enjoying it

Yahoo! Calendar - You can view an entire month or focus on a specific date and time.

Morgen.so - All-in-one Calendar, Tasks & Scheduler. Morgen is the single hub for everything that revolves around time management.

Simple Calendar - A simple calendar with events (optional recurring and reminders), week numbers and a customizable...

Fantastical 2 - Fantastical, the Mac calendar app you'll enjoy using. Quickly create new events with natural language input and more.

Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.