I think the Defragmenter in XP is developed by the same company that develops Diskeeper Products.
Diskkeeper lite and the full diskeeper is better than the standard Defragmenter in XP. Defrags much quicker and works better.
Dell XPS 13 9370 (2018) review
Best Keyboards for Designers & Artists
What to ask Siri on the HomePod
Meilleurs VPN (2018)