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/

Computer Almanac

Collection of numbers relevant to computers, along with references
http://www-2.cs.cmu.edu/afs/cs.cmu.edu/user/bam/www/numbers.html

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/