FileGator is a free, open-source, self-hosted web application for managing files and folders. You can manage files inside your local repository folder (on your server's hard drive) or connect to other storage adapters. All basic file operations are supported: copy, move, rename, edit, create, delete, preview, zip, unzip, download, upload. File upload supports drag&drop, progress bar, pause and resume. Upload is chunked so you should be able to upload large files regardless of your server configuration.
Features:
Multi-User Support Multiple Storage Adapters Single Page Front-End Chunked Uploads Bulk Download Highly Extensible