Calendario is a jQuery calendar plugin that aims to provide a suitable layout for both, small and big screens and keeping the calendar structure fluid when possible. On large screens we want to show a grid-based layout while on smaller screens, we want to simply stack the days of the month.
Multi-day, multi-month animated datepicker jQuery plugin that weighs in at 14KB with the uncompressed development version.
jQuery Verbose Calendar is a plugin for creating a calendar that displays the whole months and days of a year at the same time. Once loaded, it auto-scrolls to "today" and displays the day names when hovered to any date in a tooltip. The calendar can be inserted into any HTML element with a single function.
FullCalendar is a jQuery plugin that provides a full-sized, drag & drop calendar like the one below. It uses AJAX to fetch events on-the-fly for each month and is easily configured to use your own feed format (an extension is provided for Google Calendar). It is visually customizable and exposes hooks for user-triggered events (like clicking or dragging an event)