Real Academia Española Online Spanish Refernce Tools
Diccionario de la lengua española and Diccionario panhispánico
de dudas are available at: http://www.rae.es/. Corpus diacrónico del
español at http://corpus.rae.es/cordenet.html

EuroDicAutom
http://europa.eu.int/eurodicautom/login.jsp
An experimental European languages translator that contents a broad variety of technical terms, abbreviations, acronyms and phraseology. At this website you can translate from English to Spanish and vice versa, as well as between any two of twelve languages.

Little Explorers
www.enchantedlearning.com/Dictionary.html
Picture dictionary for preschoolers with definitions, pictures, and hundreds of Internet links for words. French, Spanish, German, and Portuguese to English dictionaries are available. Very useful for school teachers.

Travlang
http://www.travlang.com/
This site provides a variety of useful tools and links to websites for the traveler and those interested in learning a foreign language. One of the site’s features is a translating dictionary that allows you to translate from English to Spanish and vice versa, as well as between any two of several other languages.