ProVoc

ProVoc is a Mac application that helps you use flashcards to learn vocabulary from different languages.

You can create your own lessons with the words you consider most important, or use packs of vocabulary created by other users.

To create your own list, you'll need to enter each word in its original language along with its definition or corresponding word in your own. There are other options you can activate: a descriptive image, level of difficulty, pronunciation in both languages, and more.

You can download vocabulary packs organized by lessons in different languages from the application's website. There, you can also subscribe to a RSS feed that will keep you updated with new packs and other news.