Online English-Greek Dictionary - Based on Woodhouse's 1910 English to Greek dictionary, covering the Attic dialect. - http://www.lib.uchicago.edu/efts/Woodhouse/
New Testament Greek Lexicon - Look up English or Greek word, or Strong's number - http://bible.crosswalk.com/Lexicons/Greek/
Translatum - The Greek Translation Vortal - A Greek translation portal containing web tools (interactive dictionary links for many languages, quotations, encyclopedia and thesauri interactive links, interlinear and parallel bibles), electronic dictionaries, machine translation, translation bibliogr - http://www.translatum.gr/
Greek-English Translator - For ancient or modern Greek. Greek words are printed in both Latin and Greek fonts. - http://www.kypros.org/cgi-bin/lexicon/
Project Perseus: Text Tools & Lexica - Concordances to ancient Greek literature; Features the Liddell/Scott/Jones Lexicon and morphological analysis tool. - http://www.perseus.tufts.edu/lexica.html