Widgeridoo - Custom and pre-made widgets for iOS and macOS
Google Calendar - Spend less time managing your day & more time enjoying it
Glimpse - Discover trends before they're trending
Mixmax Calendar - The fastest way to schedule meetings with anyone, anywhere
Widget Web - Widget Web is a handy application that allows you to view the content of web pages in a widget on your iOS device’s home screen.
Sunsama - Calendar and scheduling for teams