Zlib

Zlib is a compression library. According to the official website, "zlib is designed to be a free, general-purpose, legally unencumbered -- that is, not covered by any patents -- lossless data-compression library for use on virtually any computer hardware and operating system."

Zlib is designed to be able to be portable across platforms, which means that data stored in a Zlib created file will be able to be opened on any machine.

Zlib was written by Jean-loup Gailly (compression) and Mark Adler (decompression).

Zlib has implementations on the following platforms:
 * Linux shared library
 * Linix static library and headers
 * HP-UP 10.20 and 11.00
 * SGI Irix 6.x
 * Solaris (1.1.4, 1.1.3)