Google Calendar - Spend less time managing your day & more time enjoying it
Clocker - Keep track of people in different time zones
Morgen.so - All-in-one Calendar, Tasks & Scheduler. Morgen is the single hub for everything that revolves around time management.
Dato - Better menu bar clock with calendar and time zones
Simple Calendar - A simple calendar with events (optional recurring and reminders), week numbers and a customizable...
Clock mini - Simple clock app in the Dock