Disk2disk is a file backup application which will back up to hard drives, network drives, and removable media. Simple to use with an explorer style interface, disk2disk also features two levels of optional compression, optional encryption, the ability to span removable media, and backup/restore of the Windows registry. Optional verification can be switched on for the backup activity, and an automatic scheduler is included.
WhatDisk
WhatDisk is an easy-to-use program that helps you categorize your disks (CD's, DVD's, ZIP disks, etc.) into a single, searchable database. Now you can find that file (or that MP3 song) you were looking for without going through all your disks.
Burn to the Brim
Burn To The Brim is a utility for grouping files and folders together in the most efficient way to fill up an entire CD, DVD or other medium. It can output the resulting structure to an ISO 9660 file, ready to be burned with most CD-burning tools.
XtraFolders
XtraFolders consists of 4 special Windows folders that can Synchronize folders, distribute files, schedule applications, keep a history of file changes, provide RAID5 like data protection, and more.
Search of Similar Files
Search of Similar Files is a powerful utility for search of similar files on disks. Easy-to-use interface allows to narrow source and target groups of files for comparison from one file to several disks.
pdftotxt
It can convert pdf to txt file, needn't Adobe Acrobat software, it has high speed in process, support batch conversion.