Her Majesty's Nautical Almanac Office 
Produces the Astronomical Almanac, the Nautical Almanac, Astronomical Phenomena, the Star Almanac and the UK Air Almanac.
http://www.nao.rl.ac.uk/Almanac Online 
Companion to National Public Broadcasting's award-winning radio and television programs: art, music, history, and current events.
http://www.ktca.org/almanac/index.shtml
Computer Industry Almanac 
An annual reference guide to the computer industry. Thousands of links.
http://www.c-i-a.com/
CNN Daily Almanac 
Provides daily briefs of historical events, previews of currently developing stories, and links to related sites.
http://www.cnn.com/almanac/daily/
Gary Price Fast Facts 
Compilation of quick reference resources, including almanacs, statistics, and fact books.
http://www.freepint.com/gary/handbook.htm
Community Almanac 
Online version of America-wide almanac for small urban communities.
http://www.thealmanac.net
The Almanac News 
A source for local news for citizens of Palo Alto and Mountain View communities.
http://www.almanacnews.com
University of Pennsylvania Almanac 
Compilation of information on politics, social studies and history.
http://www.upenn.edu/almanac/
The Moron's Almanac 
Humorous take on almanacs. Compares two unrelated events on their anniversary.
http://www.justmorons.com/
J. Grubers Hagerstown Town and Country Farmers Almanack 
Weather predictions, garden, health and home, who's who and astronomy.
http://www.almanack.com/
Computer Almanac 
Collection of numbers relevant to computers, along with references
http://www.cs.cmu.edu/afs/cs.cmu.edu/user/bam/www/numbers.html
The World Almanac 
Features online ordering of the print edition, today in history, and today's birthdays.
http://www.worldalmanac.com/