sopi 

HTML5 drag desktop files into browser jQuery filedrop uses the HTML5 File API to allow users to drag multiple files from desktop to the browser, uploading each file to a user-specified URL. file

Package for Lightbox that is small javascript library used to overlay images on top of the current page. It's a snap to setup and works on all modern browsers.

High quality image resizing and cropping

Tool for hashing and salting strings (passwords), you can specify the salt size before encrypting