Dropzone.js

http://www.dropzonejs.com/?utm_source=javascriptweekly&utm_medium=email

dropzone.js is an open source library that provides drag’n’drop file uploads with image previews

Upload files using flash and javascript – SWFUpload

http://swfupload.mammon.se/index.php

Upload files using flash and javascript – SWFUpload

A small javascript/flash library to get the best of both worlds – The great upload capabilitys of flash and the accessibility and ease of html/css