aria2 is a utility for downloading files. The supported protocols are HTTP(S), FTP, BitTorrent (DHT, PEX, MSE/PE), and Metalink. This requires c-ares from SlackBuilds.org. To use OpenSSL and Expat rather than GnuTLS and libxml2 run the script as follows: XML="libexpat" HTTPS="openssl" ./aria2.SlackBuild