http://www.synomizer.com Synonyms
http://www.acronymfinder.com
http://www.effingpot.com Britspeak
http://www.peak.org/~j.php AE-BE|BE-AE
http://engrish.com "All your base are belong to us"
http://fonetiks.org/index.html Phonetics
http://www.wordinfo.info/ Wordinfo
http://www.etymonline.com Etymology
http://www.oxid.ro Interesting browsing-features
http://www.juiciobrennan.com/hyphenator/Hyphenator
http://www.speech.cs.cmu.edu/cg Pronunciation Dictionary
You think you know "a certain word", or you´ve heard one somewhere but you have no idea about the rihgt spelling ?, that´s why you can´t find any entries in dictionaries ?, Go there, do the spell check with your similar misspelled word and find so "your" correct spelled word:
http://poets.notredame.ac.jp
(Great Performance)
http://www.spellcheck.net/
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Chat with a robot (Loebner Prize Winner)
http://www.rong-chang.com/tutorframe.htm