This is a plugin for the well-known FullCalendar library that shows a full year in a grid where each row is a month. While this view certainly needs a big screen, I find it particularly useful for displaying corporate events, school holidays or project timelines.

Have a look at the example file. You will need to load moment, the js file and the css file after the core FullCalendar files.

The code is basically a fork of the original FullCalendar DayGrid plugin with changes to achieve a full year display. The current version is based on FullCalendar 4.3.1. It may or may not work with other versions of FullCalendar.