Another useful way for studying Greek, particularly in second and third year Greek courses, is either by frequency in the NT, or according to vocabulary in a passage or entire book. There are a number of pieces of software which can help you study in this way.
MAC
Free
Flashcord— A small program designed by Joe Weaks which uses user-generated lists outputted from Accordance Bible Software. Create flashcards for specific passages or by frequency. Click the name to download.
PC
For Purchase
Flash! Pro— Yet another appeal of Flash! Pro is not only its keying to many grammars, but also its frequency information for each word, as well as its ability to study based on scripture passages.
BibleWorks Flashcard Module— BibleWorks users can easily generate their own lists of Greek vocabulary and test themselves according to frequency.