BusyCal displays your calendar in Day, Week, Month, Year and List views. What makes BusyCal unique is its ability to customize these views to more precisely meet your needs.
Calendar 366 II is a powerful menu bar calendar that comes with 8 different views and 9 themes to fit your needs and new features such as invitations & attachments.
Fantastical 2 is a robust, intuitive calendar app with a beautiful interface and dozens of features. For instance, a full-fledged mini-calendar that sits in your menu bar for quick access. It works with iCloud, Exchange, Google, Yahoo, fruux, and CalDAV accounts. But… it comes with a $50 price tag.
With InstaCal you can access your calendar from anywhere, simply by clicking the date in the menu bar. Always available in your Mac menu bar, InstaCal is quick and convenient and can be opened at any time. You can also add, view and edit reminders.
Mini Calendar is a lightweight menu bar app, which helps you to access your monthly calendar. It can display just an icon with the date, but also the time, the day of the week and the sunrise and sundown times.
Quickly see your next meeting right in your menu bar.
Overdo is a menu bar app that lets you quickly and easily schedule deadlines.
TinyCal gives you easy access to Google Calendar or Apple Calendar, straight from the menubar. Add events, reminders, lots of options. TinyCal can show multiple months, use custom calendars, show holidays from many countries and multiple personal/business calendars.