Offers access to technical reports and dependable information on every subject.
http://www.oxfordreference.com
A reference and trivia site that connects people that have picture questions about an unidentified item with a community of users that can offer answers & expertise.
http://www.picanswers.com/
Free online reference website, including general encyclopedia, drug database, medical encyclopedia, dictionary and quotations.
http://www.question.com/
Have a question post it and get answers to all your questions.
http://www.questionsandanswers.org/
A website which offering free online unit conversion and calculation tools.
http://www.smartconversion.com/
Offers free access to an online dictionary, thesaurus and encyclopedia.
http://www.thefreedictionary.com/
Online reference guide to e-services, products, and resources sorted by topic. Topics includes B2B, education, finance, health, home and garden, insurance, legal, personals, security and tourism.
http://www.e-referencedesk.com/
Offers informaiton on world records, aviation, competitions and air sports.
http://www.fai.org/
Free reference site for maps, almanacs, atlas, encyclopedia, dictionaries and thesaurses.
http://www.infoplease.com/
Question and answer web site lets people ask questions and receive answers from experts.
http://www.justanswer.com/