zlib-palmos is a port of zlib 1.1.4 to PalmOS as a SysLib. It
facilitates decompression/compression using the infozip, PK-ZIP 2.x
(.zip), and gzip (.gz) compression formats on Palm PDAs.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.