Zlib

zlib is a free software library that implements the DEFLATE compression algorithm used in the gzip file compression program. It is used in hundreds of applications because the code is portable, has a relatively small memory footprint and the decompression causes only moderate CPU load.

RFCs

• RFC1950 ZLIB Compressed Data Format Specification version 3.3
• RFC1951 DEFLATE Compressed Data Format Specification version 1.3
• RFC1952 GZIP file format specification version 4.3