Doodle - Make meetings happen. With Doodle, scheduling becomes quick and easy.
Clocker - Keep track of people in different time zones
Standuply - Run daily standup meetings and track your metrics in Slack
Dato - Better menu bar clock with calendar and time zones
MeetNotes - Increase Productivity with Meeting Notes Tool. More effective minutes, Prepare Agenda, Collaborative Notes & Action Items.
Clock mini - Simple clock app in the Dock