Defrag for Windows - Utility designed to do the tedious task of a complete defragmenting.

Defragmenter Lite - Automates the necessary steps for an efficient and problem-free disk defrag.

Defragmenter Pro - Automates the necessary steps for an efficient and problem-free disk defrag.

Delenda - Delete old files by date: creation, modification, last access, transfer, archive

Delete - Secure flexible file deletion utility with mirror master directory option.

Deletor - Deletor: Delete and shred files. Includes date filtering and command line access

DeskBar - DeskBar allows quick access to commonly used functions in Windows.

DIAG - Get all information about your hardware without opening your computer.