The Mozilla Platform
A free toolbar for Internet Explorer to display virtual flashcards while loading webpages. Windows only.
Tools for teachers or textbook publishers to central manage vocabulary words to be delivered electronically to student's browsers. [currently unavailable]
Update: I wasn't expecting to get slashdotted, so things are a little rough. Currently, I'm in a slow and overpriced internet cafe in Isreal, so I can't provide all the extra .csv files everyone has been requesting. If you make any, please post them on langwidge.mozdev.org . Someone told me their making a Japanese one at http://jpbarto.freeshell.org/japanese.csv , I'll update German and such in a couple weeks when I get home.
Example of Mozilla Usage:
Copyright 2004 Ravi Purushotma