Plupload is a tool for uploading files using Flash, Silverlight, Google Gears, and HTML5.

Plupload comes from the developers of TinyMCE, the ever-popular JS WYSIWYG editor, and thus can be considered a rather serious project.

Notable features include:

• Easy to implement;
• Drag&Drop support (FF and Chrome);
• Image resizing (PNG and JPG);
• Stream upload;
• Multipart upload;
• etc.

• Website: http://www.plupload.com/index.php
• Demo: http://www.plupload.com/example_queuewidget.php

JSZip is a JavaScript library for client-side data compression.

JSZip has a few downsides, though: for FireFox and Safari, the zip files are named rather awkwardly.

That isn’t, however, a worthwhile argument against the fact that JSZip can take a huge load off your server’s processing power.

Photo gallery projects, or any web applications that have to deliver several files to a user at once will hugely benefit from JSZip — and there might still be a way to prevent the awkward filenames.

• Website: http://jszip.stuartk.co.uk/

Zipper is a Node.js zip file creator with a super easy API.

Zipper is used with only giving a single method.

The plugin is useful for web apps where you have to handle out files in zip format.

There are plans to improve the architecture of this plugin, namely to stream the zip files out rather than work through the file system.

• Website: http://weblog.savanne.be/445-zipper-an-insanely-simple-zipfile-creator-for-node-js

Goker Cebeci has published an awesome HTML5 Drag&Drop Uploader — just like the one used at Gmail.

The plugin uses a PHP server-side uploader and jQuery for achieving the desired effect.

You can use this plugin for any drag&drop operations you need in your web apps, plus, the plugin is rather easy to use, too.

• Website: http://gokercebeci.com/dev/droparea

pikipimp is a web based service that allows you you to edit your image online. No registration required.

• Website: http://www.pikipimp.com/

Wuala is a free, simple and secure personal cloud storage and online collaboration tool. You can upload, securely share, discover and download images, videos, music and documents.

Backup.

Securely store and back up your files online and access them from anywhere. All files are encrypted.

Sync.

Sync your files online and across multiple computers. Your files are always up to date – anywhere, anytime.

Share.

Share files with selected friends and co-workers. You choose who has access to which folder.

Secure.

All files get encrypted and are stored redundantly. No one unauthorized can access your files.