For Mac enthusiasts in the throes of (ancient) language study (or any study in general), you may find these links of freeware to be a great help. The first is Genius (compare Ebbinghaus; Chris Heard gives a thumbs up). This has now replaced my old study habit of using physical flash-cards. These days I can’t study without it. Click the link to read more. The second one is a Latin dictionary, Latin WORDS (also for Windows users) that I use for quick searches (not to replace the Perseus project). Both are recommended (or all three, counting Ebbinghaus, if you’d like)!