Custom SmartForm Control
Out of the box SmartForms provide a one-at-a-time file upload capability. This can be tedious for users who need to upload many files. With drag and drop functionality, the Multiple File Upload Control makes it easy for users to upload many files in one go.
The Download file includes a robust working example complete with database, SmartObjects, Forms, and Views.
You can run this video to see what the user experiences.