zlib是提供数据压缩用的函式库，由Jean-loup Gailly与Mark Adler所开发，初版0.9版在1995年5月1日发表。zlib使用DEFLATE算法，最初是为libpng函式库所写的，后来普遍为许多软件所使用。此函式库为自由软件，使用zlib授权。截至2007年3月，zlib是包含在Coverity的美国国土安全部赞助者选择继续审查的开源项目-zlib is used to provide data compression library by Jean-loup Gailly and Mark Adler developed, first edition version 0.9 on May 1, 1995 publication. zlib using the DEFLATE algorithm, originally written for the libpng library, and later used by many software generally. This library is free software, use the zlib license. As of March 2007, zlib is included in Coverity sponsorship of the U.S. Department of Homeland Security' s choice to continue to review the open source project