CalendarNike provides a simple calendar.

Ruby client for the Mobiscroll Connect API. Unified OAuth, calendars, and events across Google Calendar, Microsoft Outlook, Apple Calendar, and CalDAV.

This gem provides a function to generate calendars and calendar entries.

Rails helper for showing multiple, overlapping events across calendar days and rows.

Social Stream is a Ruby on Rails engine providing your application with social networking features and activity streams. This gem allow you to add events as a new social stream activity, with a calendar-supported management

Generates HTML event calendars

A library that allows for quick HTML parsing of GitHub user profile contribution calendars. This project is part of the GitHub User Language Statistics project.

HtmlCalendar is an extremely lightweight/extensible gem for creating HTML calendars in Rails (>= 3.1).

A calendar object which can be output to XML format from a Polyrex document object

A collection of methods and classes required to construct calendars in, and convert Gregorian dates to, the Gaulish Calendar found in Coligny, France, according to Helen McKay's reconstruction.

A simple helper for creating HTML calendars and tables. An example in a view: <%= HtmlSkeleton.new.calendar %> The calendar/table may be embelished by user supplied lambda's, e.g. for inserting link_to.

calender

A cal-like calendar

a generator for adding google-based users via omniauth, and querying google calendars

Integrate easily with Google Calendar and Microsoft Outlook calendars.

FatDate provides useful extensions to the Date class including a way to specify dates via a number of rich 'specs', strings that allow specifying dates using calendar-based concepts, such as years, quarters, months, semimonths, biweeks, weeks, and days. Also, provide methods for determining whet...

This gems provides some helpers for ActionView to make creating calendar helpers in forms easier.

Gem to include pop up calendars that display, format both date and time using javascript

Calendar date picker for rails

This plugin adds the COSMOS Calendar tool