Interactive Web program that prints out Jewish and civil calendars side-by-side. Does not list holidays in either calendar. Source code available.

An online handy tool for converting to and from the Gregorian, Julian and Jewish calendars.

Daily Zmanim Times Lookup for Anywhere in the Entire World

MikvahMinder is an online Mikvah Calendar which makes keeping Taharas HaMispacha (Family Purity) easy by calculating all dates and sending reminders to your email or cell phone.

Online Hebrew civil calendar portal. Also receive email reminders of holidays and personal events.

Easy to use Hebrew/civil applications for Windows, Windows Mobile, Java-powered cellphones, Blackberry, and Palm.

Hebrew and English calendar for Windows. Displays a Hebrew or civil month with holidays, Shabbat portions, and halachic times. User data can be added.

Dates of all major and minor Jewish holidays and fast days, with explanations, observances, and links to other articles of interest. From the OU.

Jewish events calendar focusing on cities in North America, but allows other major Jewish cities to submit events. Allows for easy submission of events via Facebook integration, and Facebook events can be added in seconds.

Converts dates between Jewish and civil calendars; displays monthly calendars and candle lighting times for different geographical location.

Explains the relationship between the Hebrew civil calendar and Hebrew religious calendar and describes the history of the Hebrew month names.

Interface for finding dates in the Hebrew calendar, with holidays and memorial days. Uses PHP calendar software.

Perpetual calendar for thousands of locations world-wide.

Click to see todays, or any other days date in the Hebrew calendar

A collection of resources concerning the calculation of the Hebrew calendar.

Complete Hebrew calendar program for Unix and Windows. Candlelighting times, holidays, Omer counts, and Torah readings. C and Perl source code available, as well as a Windows executable and links to Web versions of the software.

Interactive web interface for generating a list of Jewish dates and times customized to zip codes, converting between Hebrew and Gregorian dates.

Hebrew (Jewish) Calendar that gives Hebrew Months and days along with Gregorian dates. Jewish Holidays, Torah Readings and other information.