Undelete is a process of restoring computer files which have been removed/deleted from a file system by file deletion. Deleted data can be recovered on many file systems, but not all file systems provide an undeletion feature

List of popular undelete softwares

1. Undelete Plus.
   http://www.undelete-plus.com
2. Restoration
   http://www.snapfiles.com/get/restoration.html
3. PC Inspector File Recovery
   http://www.pcinspector.de/Sites/file_recovery/info.htm?language=1
4. Recuva
   http://www.recuva.com/
5. Handy Recovery
   Handy Recovery
6. Disk Internals Uneraser
   DiskInternals Uneraser
7. The Undelete Data Recovery Software
   The Undelete Data Recovery Software
8. Free Undelete
   FreeUndelete 
9. File Rescue Plus
   File-Rescue Plus
10. Final Recovery File Undelete Utility
    FinalRecovery