ftp://ftp.net.usf.edu/pub3/ubuntu/pool/universe/libz/  direct

[DIR]libzip/  direct  520+ twin directories
[DIR]libzip-ruby/  direct  340+ twin directories
[DIR]libzlib-ruby/  direct  330+ twin directories
[DIR]libzrtpcpp/  direct  400+ twin directories
[DIR]libzvt/  direct  700+ twin directories
[DIR]libzorpll/  direct  310+ twin directories