Simple File List gives your WordPress website a list of your files which allows your users to open and download them.
Your personal WordPress-based Dropbox! Manage files and documents outside the media library. Upload, track, share and download files effortlessly.
Best WordPress File Sharing Plugin. Upload and share private files/folders with users securely. A dropbox/g-drive like system.
Assets Manager for WordPress is a self hosted file sharing tool, enable / disable links, set expiration and make files you share password protected.