Smart Defrag 2
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Full user review
"One of the best"
Works like a charm
The 2 reviews before mine appear that they have a malware infestation. There is a fake defragmenter program called "Smart Defragmenter", and it is not associated with "Smart Defrag 2". Smart Defrag 2 has been tested to be virus and malware free. Go here to see the results of the testing.
This next site will give you information on the fake defragmenter program.