This page contains some vocabulary from various sources. Click the links to download a plain .txt file containing the vocabulary with the Greek and English separated by tabs. I have tried always including all necessary forms — all principal parts, nominative and genitive of nouns, all adjective parts — so that everything should be included and you simply need to import these files into your program of choice.
How to use: Right click the vocabulary you want to download and click the Save link as
(in Firefox) button. A dialog will pop up, asking you where you want the file to be saved. You could also left click the vocabulary and press CTRL+S on the page that then appears.