A jQuery plugin to turn standard input type file into a nice drag&drop zone with validators and previews.
Provides signature field as jQuery component, using either a sketch pad or an uploaded signature file.
jQuery html5 file uploader plugin
Cross Browser Ajax File Uploads.
A simple ajax file upload plugin
A better HTML input for files, allowing custom styling and initial values.
The jQuery inputFileWidth plugin sets the width of an input file element, also in FireFox.
A demonstration of a method to submit Google Forms using AJAX.
jQuery plugin for ajax file uploading with file progress
jQuery plugin to upload multiple files, one after the other using a queue into list.