JumpLoader是一个Java applet设计用于从客户端上传文件至Web服务器。

Default jumploader view — uploading several images.

Jumploader with local file tree (left), local directory view (right-top) and upload queue (right-bottom).

功能特性：

• Upload utilizing HTTP(S) protocol.
• Upload to FTP server.
• Client side image transformation (i.e. scale, rotate) on upload.
• Scaled image watermarking.
• Image thumbnail support.
• Integrated file system browser (demo).
• Transparent proxy support.
• Browser cookie support.
• Unlimited file count.
• Unlimited file(s) length.
• Concurrent upload of multiple files.
• Upload progress monitor.
• Upload directories (including zipping and encryption).
• Resume broken uploads.
• Internationalization.
• Custom attributes.
• Partitioned file upload.
• Configure constraints for files allowed to upload (file name pattern, file length, total length).
• Manage queue (add, remove, abort, retry files), even while uploading.
• Add files using preferred way: drag and drop, standard file dialog or integrated file system browser (see screenshots).
• Customizable view.
• Configurable upload options (target URL, request parameters).
• Receive custom errors from server.
• JavaScript callbacks (notifications).
• Model interface for JavaScript.
• View interface for JavaScript.
• Document processing (download/edit/upload).
• Metadata input.
• Internal image editor (demo, screenshot)
• Download files (demo)

项目主页：http://www.open-open.com/lib/view/home/1337916593496