Infoplease is a free, authoritative, and respected reference for Internet users that provides a comprehensive encyclopedia, almanac, atlas, dictionary and many more.

Since 1792, The Old Farmer’s Almanac has spoken to all walks of life: planting charts for those who grow their own food; recipes for those who live in the kitchen; Moon and sunrise times for those who watch the skies; and forecasts for those who don’t like the question of weather left up in the air.

Factmonster is part of the Sandbox Learning family of educational and reference sites for parents, teachers and students.

World Atlas with links to maps of countries, states, and regions, and find a geography guide & facts about every country in the world.

WorldAtlas is one of the largest publishing resources in geography and other topics it covers, including sociology, demography, environment, economics, politics, and travel.

The most popular dictionary and thesaurus for learners of English. Meanings and definitions of words with pronunciations and translations.

offering millions of useful and interesting facts on a wide range of topics online, also include almanac and encyclopedia.

The dictionary by Merriam-Webster is America's most trusted online dictionary for English word definitions, meanings, and pronunciation.

The OED is the definitive record of the English language, featuring 600000 words, 3 million quotations, and over 1000 years of English.

The Free Dictionary is an American online dictionary and encyclopedia that aggregates information from various sources.

At Encyclopedia.com, you get free access to over 300,000 reference entries from sources you can cite. Plus, more than 50,000 topic summaries feature related pictures, videos, topic summaries, and newspaper and magazine articles from around the world.

The Internet Encyclopedia of Philosophy (IEP) is a scholarly online encyclopedia, dealing with philosophy, philosophical topics, and philosophers.

Reference.com is an online encyclopedia that organizes content that uses a question-and-answer format. Articles are organized into hierarchical categories.