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JSON is a lightweight data-interchange format. It can represents integer, real number, string, an ordered sequence of value, and a collection of name/value pairs.
QJson is a qt-based library that maps JSON data to QVariant objects.
Protodata is a language for manually creating binary data files without the use of a hex editor, with the original purpose of prototyping new file formats.
dbook is a collection of programs to manage a big book collection on the command line Including: ISBN checker and converter, Amazon book information retrieval, [book data base, lend record] create bibtex out of latex/tex automatically.
DBook is also a Document creation tool which can be found under http://www.dbook.org