Here is my list of the useful libraries in C and C++ for compression that I have found so far. 11Zip Link, C++ bit7z Link, C++ LibZippp Link, C++ zipper Link, C++ zstr Link, C++ minizip-ng Link, C zlib-ng Link LibZip Link, C boost::iostream::gzip Doc, Example, C++ Gzip Link, C QuaZip Link, C++