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.
BleachBit deletes junk to recover disk space and maintain privacy. It rids your system of old junk including cache, Internet history, temporary files, unused locale files (better than localepurge), logs, and cookies. Designed for Linux systems, it wipes clean 50 applications including Adobe Reader, Bash, Firefox, Flash, OpenOffice.org, Opera, Real Player, Skype, and more. It shreds files so that they cannot be recovered, and it wipes free disk space to hide insecurely deleted files. It offers both a simple PyGTK GUI and a command line interface for automation.
Kiwix is an offline reader for Web content. It was designed for use with Wikipedia, but is potentially suitable for all HTML content. It supports the ZIM format, a highly compressed open format with additional meta-data. It is intended for use in schools, universities, and libraries which can't afford broadband Internet access. It features a full text search engine, bookmarks and notes, an HTTP server, PDF/HTML export, a user interface in more than 80 languages, tabbed navigation, and an integrated content manager and downloader.
Basenji is an indexing and search tool designed for easy and fast indexing of media collections. Once indexed, removable media such as CDs and USB sticks can be browsed and searched for specific files very quickly, without actually being connected to the computer. Besides file hierarchies and audio track listings, Basenji also presents extracted metadata (image dimensions, mp3 tags etc.) and content previews of indexed media in a clean and straightforward user interface.