It consists of 4 separately-installable packages: the Zip and UnZip command-line utilities; and WiZ and MacZip, which are graphical user interfaces for archiving programs in Microsoft Windows and classic Mac OS, respectively.
[1] Many Info-ZIP programmers have also been involved in other projects closely related to the DEFLATE compression algorithm, such as the PNG image format and the zlib software library.
In 1994 and 1995 Info-ZIP turned a corner, and effectively became the de facto ZIP program on non-MS-DOS systems.
A huge number of ports were released that year, including numerous minicomputers, mainframes and practically every microcomputer ever developed.
[3] As a slowly-updated open software package, many patches have been written by various Linux distributions to improve info-zip tools.
In addition, from 2015 to 2019, 14 unzip vulnerabilities have been published on the CVE list without version or website updates from info-zip.
)[8] Mark Adler has a set of patches for unzip 6.0 that detects zip bombs of the overlapping type.
[9] The Debian project provides various patches to correct typographical errors and security issues, including the 17 unzip CVEs.
A version of the patch combined with CVE mitigations are provided as a User Package in Arch Linux.
[11] The Gentoo project improves upon the hard-coded locales with an external libnatspec library.
[15] A newer release candidate, Zip 3.1d, appeared on the official FTP site in 2015, but the SourceForge page was not updated.
It produces a command-line compatible version of unzip based on libarchive, which also supports zipx and AES.