DiskSearch is a tool for searching for files on all your removable media disks, including CDs, ZIP disks, and backup tapes. It allows you to search for songs on your MP3 CDs or for a document on your backup DVDs. For advanced queries, a regular expression search mode is provided. Searches are based on a simple database file, which needs to be filled once by adding all your disks to it.
Docpile is a PHP-based document management system that allows multiple people to share documents and keep track of revisions. Users can upload and download documents, grant per-file, -user, or -folder access privileges, and send notification emails when documents are being updated. Administrators can create access groups, each responsible for a different set of folders and users.
DragStacK is a kicker applet, a stack of files. It was inspired by the drop stack of the PathFinder file manager for OS X. Users can drop as many files on it as they want. To get the files out of the stack they just need to be dragged out. The last file that was dropped on the stack is the first file that can be dragged out of it. It does not keep the files themselves in the stack, only their paths. It can also handle stacking URLs and directories.
DupeFinder is a simple application for locating, moving, renaming, and deleting duplicate files in a directory structure. It's perfect both for users who haven't kept their hard drives very well organized and need to do some cleaning to free space, and for users who like to keep lots of backup copies of important data "just in case" something bad should happen.
Duplicate Files Searcher is an application for finding and deleting duplicate files on your computer. It can also be used to calculate MD5 and SHA hashes. It has features such as manual files selection (giving the user full control over files to be deleted), byte for byte file comparison, file preview, several file comparison methods, and more.