• LWP::UserAgent::WithCache (LWP-UserAgent-WithCache)
• URI (URI)

Установка FreeBSD.

 # cd /usr/ports/www/p5-LWP-UserAgent-WithCache && make  && make install
 # cd /usr/ports/net/p5-URI && make  && make install

Установка Ubuntu, Debian

# apt-get install liblwp-useragent-determined-perl
# apt-get install liburi-perl 

CentOS

yum install perl-URI
yum perl-Crypt-SSLeay
yum perl-libwww-perl

Установка с CPAN

# perl -MCPAN -e shell 
install Bundle::LWP