We've found that many of our clients have trouble with the default drag and drop plone offers. Additionally, it's often asked for a multi-file uploader.
wildcard.foldercontents is the packing of various different features:
- Better drag and drop based off of jQuery UI sortable
- uploadify multi-file uploads based off of collective.uploadify
- automatic folder sorting--idea stolen from collective.sortmyfolder
Here's a brief choppy demonstration of how it works: