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The GNU zip format. (MIME-Type: application/gzip) gzip is a free compression program based on the DEFLATE algorithm, which was developed as an alternative to LZW, which is limited by patents.
Unlike, for example, zip, gzip compresses a single file. gzip is often used in conjunction with tar to create a compressed collection of files (.tar.gz or .tgz).
Related software tools
7-Zip (Open source)
7-Zip is a free compression software that can create and open .zip, .rar and .7z file formats, among others.