Zlib provides compression and decompression functions to programs. Most people will want zlib because both servers and clients are likely to need the openssl libraries which in turn require zlib. Servers will want openssl because it is needed for running OpenSSH services and clients because most web browsers need it to deal with https (secure) websites. &zlib-intro; &zlib-inst; &zlib-exp; &zlib-config; &zlib-desc;