Calendar
Calendar is a time-management web application by Microsoft.
19 Alternatives To Calendar
Apple Mail
There’s big news attached.
Boomerang Calendar
Smart Calendar Assistant for Gmail | Boomerang Calendar
BusyCal
powerful calendar app for macOS
Calinsight Calendar and Reminder
OSX and Productivity
Chili Piper
Chili Piper is an intelligent calendar for Sales teams, to book their own meetings or set appointments for other teams.
FreeBusy
Easiest way to share availability across calendars for free
Google Calendar
Spend less time managing your day & more time enjoying it
Informant
Informant for Mac is the hottest new productivity software for mac users. Organize Tasks Projects, Notes, Calendar, all in one app. Free Trial Available
Lightning Calendar
Organize your life — it’s about time!
Microsoft Exchange
Secure Email Gateway
One Calendar
OneCalendar is a powerful tool that integrates all your calendars into one easy to read overview. View and manage all your appointments, events and birthdays. Easily filter the information you would like to see.
Outlook
Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
Pip-Boy M3600
Free
Rainlendar
Rainlendar - Customizable desktop calendar
S7en
First featured custom watchface pack for WearFaces. Download it here.
Simple Calendar
A simple calendar with events (optional recurring and reminders), week numbers and a customizable…
SmartDay
Integrated organizer with automatic scheduling.
Spike
Spike is a content marketing platform that drives content recommendations to your target audience, helping to amplify your message and connect with customers.
Square Appointments
Add an online booking link. Easily embed the customizable widget directly on your website. Any changes to your online scheduling, prices, or services update automatically.