Fantastical 2 - Fantastical, the Mac calendar app you'll enjoy using. Quickly create new events with natural language input and more.
Booking Ninja - Booking Ninja allows you to create a free, simple, online reservation tool for your restaurant or cafe.
BusyCal - powerful calendar app for macOS
OpenTable - Make online restaurant reservations, read restaurant reviews from diners, and earn points towards...
Google Calendar - Spend less time managing your day & more time enjoying it
Hostme - Reservation, table, waitlist and loyalty management for restaurants