Noda Time is a date and time API acting as an alternative to the built-in DateTime/DateTimeOffset etc types built into the .NET framework. It's based on the "engine" of Joda Time, the popular Java library - but with an API designed from the ground up.
DDay.iCal is an iCal (RFC 5545) class library for .NET 2.0 and above, Silverlight. It aims at being as RFC 5545 compliant as possible, while targeting compatibility with popular calendaring applications, like Apple iCal, Outlook 2007, etc.
A full-sized, drag and drop calendar for jQuery
Fullcalendar is Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
Copyright (c) 2011 Adam Shaw (http://arshaw.com)
DHTMLX Scheduler .NET web control provides rich and flexible APIs to achieve the desired look-and-feel.
You can change the calendar appearance and configuration according to your app needs. The calendar has basic views (Day, Week, Month), and can also display events in Timeline, Agenda, Year, Grid...
This project is a merge of several common DateTime operations on the form of
extensions to System.DateTime, including natural date difference text (precise and human rounded),
holidays and working days calculations on several culture locales.
Feedback will be much appreciated.
Intuitive drag-and-drop interface allows the end users to quickly manage events and appointments in different views: Day, Week, Month, Year, Agenda, etc. Very lightweight , highly customizable, and fast, dhtmlxScheduler provides a quick way to add an Ajax-based event calendar on a web page.