Bigasoft YouTube Downloader Pro for Mac is a tool for ripping and converting YouTube videos. It supports YouTube playlists for batch operations, and converts to MP3, MP4, MOV, MKV, AVI, MPEG, Xvid, DivX, H.264, 3GP, WMV, FLV, MOD, TOD, WTV, and more. It also features volume adjustments, simultaneous download and conversion, actions upon completion, and more.
OpenTeacher is a vocabulary training application that helps you learn a foreign language. It uses a list of words in both a known and a foreign language and tests you. It supports smart question asking and interval training with Think answers, shuffle answer, and repeat answer input modes. It has easy symbol, Greek, and Cyrillic input, and reads and writes T2K (Teach2000) and WRTS files, and reads ABBYY Lingvo Tutor files. It is available in Arabic, Australian English, Brazilian Portuguese, Chinese (Traditional), Croatian, Czech, Danish, Dutch, French, German, Hebrew, Hungarian, Japanese, Korean, Polish, Russian, Serbian, Slovenian, Spanish, Swedish, and Turkish.