Calendarific is described as 'Global holiday JSON API and event management & intelligence platform' and is a Calendar app in the office & productivity category. There are more than 50 alternatives to Calendarific, not only websites but also apps for a variety of platforms, including Android, Windows, iPhone and Linux apps. The best Calendarific alternative is Google Calendar, which is free. Other great sites and apps similar to Calendarific are Etar, Simple Calendar, Rainlendar and Nextcloud Calendar.
OneView Calendar is an innovative take on the calendar using a proportional and infinitely zoomable timeline. Days on the calendar are proportionally sized with weeks to help you get a proper feel for your plans.
