File Uploader With Preview – file-upload-with-preview.js
The file-upload-with-preview.js JavaScript library enhances the default file input with support for file preview before uploading.
JavaScript & CSS uploader
Elegant File Input Enhancement Plugin With JavaScript – filepond
filepond is a JavaScript file upload plugin which helps you create elegant, flexible, customizable, drag-and-drop file input on the web page.
Customizable Multi-file Uploader – SlashUploader
SlashUploader is a simple, flexible, cross-browser, highly customizable file uploader written in pure JavaScript.
Drag and Drop File Uploader In Vanilla JavaScript
A Vanilla JavaScript component to create a beautiful drag’n’drop file uploader with image preview.
Pretty Drag And Drop Upload Zone In Pure JavaScript – Dropzone
Dropzone is a lightweight yet configurable JavaScript library that converts the normal form element into a pretty nice drop’n’drop with file preview and upload progress support.