Servers to connect and download files from remote host

Python

  python -m SimpleHTTPServer
  python3 -m http.server

Ruby

  ruby -rwebrick -e "WEBrick::HTTPServer.new(:Port => 8000, :DocumentRoot => Dir.pwd).start"

PHP

  php -S 0.0.0.0:8000

FTP (using python)

  python -m pyftpdlib --directory=/home/ --port=8000 --write