imgix - Real-time Image Processing. Resize, crop, and process images on the fly, simply by changing their URLs.
Uploadify - Uploadify is a jQuery plugin that allows users to easily add multiple file upload functionality to their website.
Cloudimage - Cloudimage.io is the easiest way to resize, store, and deliver your images to your customers through a rocket fast CDN.
Fine Uploader - Javascript plugin tool to give your users a smooth experience when uploading files to your website.
Sirv - Dynamic image processing, hosting and rich-media for retailers and eCommerce.
FancyUpload - digitarald:Harald K - Consultant & Contractor - FancyUpload - Swiff meets Ajax - Swiff meets Ajax for powerful and elegant uploads.