Sdictionary is a dictionary that uses its own dictionary format. Unlike ptkdic or gtkdic, MySQL isn't needed; you can work with dictionary files directly. It uses Unicode, meaning that words and articles all are in UTF-8. There are two index levels, compression, and tools to convert from text files to .dct and vice versa. A Perl/Tk version, libsdict, a C library framework, and a Symbian version are available.