NTFS.com

NTFS.com
Offers detailed specifications of NTFS and FAT file systems and hard disk drive basics in addition to data recovery software.
Source: www.ntfs.com

Active UNDELETE
Data recovery software designed to recover lost, deleted, and formatted data from hard drives, floppy disks, dynamic volumes, and hardware or software RAIDs.
Source: www.active-undelete.com

R-Undelete - R-Undelete is file recovery and undelete tool for FAT, NTFS file systems.
... to-use but powerful file recovery and undelete software for FAT, NTFS, NTFS5, and Ext2FS file systems ... shell and all undelete and file recovery functions are accessible from Windows ...
Source: www.sharewareconnection.com