Before You Know It (usually Byki) is language acquisition software that is available as freeware for both Windows and Mac OS X in its basic version.[1] Byki uses a personalized language-learning system and a flashcard software system. It's available in over 70 languages.[2] The system is based on declarative learning of a new language with English as the base language, using the idea that the best way to approach a new language is through its vocabulary. The software has a virtual community of users who make the vocabulary database bigger.
This flash card software program helps learning and remembering dozens of foreign languages vocabulary words and is available for both Windows and Macintosh. The language software has interactive vocabulary practice, progress tracker and sound files. It aims to be a personalized language-learning system that locks foreign language words and phrases into memory.