Heel is a small static web server for use when you need a quick web server for a directory. Once the server is running, heel will use launchy to open your browser at the URL of your document root. Heel is built using Rack and Puma % heel Launching your browser... Puma 1.6.3 starting... * Min threads: 0, max threads: 16 * Environment: deployment * Listening on tcp://0.0.0.0:4331 Or run it in the background % heel --daemonize Launching your browser at http://0.0.0.0:4331/ % heel --kill Sending TERM to process 3304 Done.