Your own http://usetorpedo.com clone. Automagically disappearing secrets. No file uploads here but that can be done too.

client.js

var secret = window.prompt('Enter your secret')
var xmlhttp = new XMLHttpRequest()
xmlhttp.onreadystatechange = function () {
  if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
    var obj = JSON.parse(xmlhttp.responseText)
    window.alert('secret saved at: ' + obj.url)
  }
}
xmlhttp.open('POST', 'http://mysecrets.mydomain.tdl/p', true)
xmlhttp.setRequestHeader("Content-type","application/json");
xmlhttp.send(JSON.stringify({secret: secret}))

index.js

var app = require('express')()
  , redis = require('redis').createClient()
  , uuid = require('node-uuid')
  , async = require('async')
  
app
  .use(require('connect-logger')())
  .use(require('body-parser')())
  .use(require('express').query())
  .post('/p', genSecretId)
  .post('/p', putSecret)
  .post('/p', sendUrl)
  .get('/s/:secretid', getSecret)
  .get('/s/:secretid', sendSecret)
  .use(app.router)
  .use(handleErrors)
  
function genSecret(req, res, next) {
  req.secretid = uuid.v4().replace(/-/g,'')
  req.secret = req.body.secret
  next()
}
  
function putSecret(req, res, next) {
  var key = 'secrets:' + req.secretid
  
  async.series([
    redis.set.bind(redis, sey, req.secret),
    redis.expire.bind(redis, key, 60*60*24*2) // 2 days in seconds
  ], next)
}

function sendUrl(req, res) {
  var url = 'http://' + (req.headers.host ? req.headers.host : 'localhost') + '/s/' + req.secretid
  res.json({ url: url })
}

function getSecret(req, res, next) {
  var key = 'secrets:'+req.params.secretid
  async.series([
    redis.get.bind(redis, key),
    redis.del.bind(redis, key)
  ], function (err, results) {
    req.secret = results && results[0]
    next(err)
  })
}

function sendSecret(req, res) {
  res.send({ secret: req.secret })
}

function handleErrors(err, req, res, next) {
  console.error('Error in request ' + req.url + ':', err.stack)
  res.send(500, { error: err.toString() })
}