-GoVPN is written on @url{http://golang.org/, Go programming language},
-@emph{Make} is recommended for convenient building.
-@url{https://www.gnu.org/software/texinfo/, Texinfo}
-is used for building documentation.
+Possibly GoVPN already exists in your distribution:
+
+@itemize
+@item @url{https://aur.archlinux.org/packages/govpn/, Arch Linux AUR}
+@item @url{http://www.freshports.org/security/govpn/, FreeBSD ports}
+@item @url{https://gpo.zugaina.org/net-misc/govpn, Gentoo Portage Overlay}
+@item @url{https://pkgs.org/download/govpn, openSUSE OSS}
+@end itemize
+
+GoVPN is written on @url{https://golang.org/, Go} programming language
+and you have to install Go compiler (1.5+ version is highly recommended,
+1.4 is the minimal sufficient): @code{lang/go} port in FreeBSD and
+@code{golang} package in most GNU/Linux distributions. @emph{Make} (BSD
+and GNU ones are fine) is recommended for convenient building.
+@url{https://www.gnu.org/software/texinfo/, Texinfo} (6.1+ version is
+recommended) is used for building documentation. Possibly you also need
+to install TUN/TAP interface utilities (depending on your operating
+system): @code{uml-utilities} package in most GNU/Linux distributions.