delphi zlib 1.2.3.2009
# zlib version 1.2.3 for delphi 5, 6, 7, 8, 2005, 2006, 2007, 2009
# now supports simple gzip files
# includes zlib source code and c++ builder 6 project files (c++ builder 6 was used to compile c source into object files)

http://www.base2ti.com/zlib.htm