Info-ZIP
| Info-ZIP's Zip | |
|---|---|
| Developer(s) | Info-ZIP |
| Initial release | August 1992 |
| Stable release | 3.0
/ 7 July 2008 |
| Preview release | 3.1d
/ 15 November 2015 |
| Written in | C |
| Type | File archiver |
| License | BSD-like license |
| Website | sourceforge |
| Info-ZIP's UnZip | |
|---|---|
| Original author(s) | Samuel H. Smith |
| Developer(s) | Info-ZIP |
| Initial release | 3 March 1989 |
| Stable release | 6.0
/ 29 April 2009 |
| Preview release | 6.10b
/ 10 December 2010 |
| Written in | C |
| Type | File archiver |
| License | BSD-like license |
| Website | sourceforge |
| WiZ | |
|---|---|
| Developer(s) | Mike White |
| Stable release | 5.03
/ 11 March 2005 |
| Written in | C |
| Operating system | Windows 3.1 and later |
| Platform | IA-32, Alpha AXP (Windows NT series only) |
| Type | File archiver |
| License | BSD-like license |
| Website | infozip |
| MacZip | |
|---|---|
| Developer(s) | Dirk Haase |
| Final release | 1.06
/ 22 February 2001 |
| Written in | C |
| Operating system | Mac OS Classic 7 or later |
| Platform | Motorola 68020 or later; PowerPC |
| Type | File archiver |
| License | BSD-like license |
| Website | geek |
Info-ZIP is a set of open-source software to handle ZIP archives. It has been in circulation since 1989. 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.
Info-ZIP's Zip and UnZip have been ported to dozens of computing platforms. The UnZip web page describes UnZip as "The Third Most Portable Program in the World", surpassed by Hello World, C-Kermit, and possibly the Linux kernel. The "zip" and "unzip" programs included with most Linux and Unix distributions are Info-ZIP's Zip and UnZip.
In addition to the Info-ZIP releases themselves, parts of Info-ZIP, including zlib, have been used in numerous other file archivers and other programs. 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.