diff --git a/launch.js b/launch.js
new file mode 100755
index 000000000..4d2ade4b3
--- /dev/null
+++ b/launch.js
@@ -0,0 +1,32 @@
+#! /usr/bin/node
+
+'use strict';
+
+
+
+var sys = require('sys')
+var exec = require('child_process').exec;
+function puts(error, stdout, stderr) { sys.puts(stdout) }
+
+function isNumber(n) {
+  return !isNaN(parseInt(n)) && isFinite(n);
+}
+
+var args = process.argv.slice(2);
+var n_str = args[0];
+if (!isNumber(n_str)) {
+  console.log('Program requires one numeric argument');
+  process.exit(1);
+}
+
+var N = parseInt(n_str);
+var DEFAULT_PORT = process.env.DEFAULT_PORT || 3000;
+
+
+for (var i=0; i<N; i++) {
+  var port =(i+DEFAULT_PORT);
+  console.log('Simulating copayer #'+(i+1)+' at http://localhost:'+port);
+  var command = 'PORT='+port+' node app.js &'
+  exec(command, puts);
+}
+