Serialport w/ Node.js. Parses Strings (send by Arduino).

serialport

var serialport = require("serialport");
var SerialPort = serialport.SerialPort;
var port = "/dev/tty.usbmodem1411";

var sp = new SerialPort(port, {
  parser: serialport.parsers.readline("\n")
});

sp.on("data", function (data) {
  console.log(data);
  // or do some Collection/DB stuff
});