Meganekko was a flash card program that I developed to make it easier to remember Japanese vocabulary and Kanji. It was based on the principles of the Leitner system and took advantage of wxWidgets to construct a cross-platform user interface. Meganekko was written in C++ using the Code::Blocks IDE (project files for Visual Studio are also available). Flashcard data was serialized to XML via the TinyXML library.
Although Meganekko eventually matured to a usable state, I stopped development after I discovered Anki, a more mature and feature-rich application.