A valid free (open source) app of defrag,  good in speed and great in the quality of results, based on the open source defrag JK Defrag. Despite the great simplicity, it is possible to configure some interesting options, like scheduled defrag, and more.

I consider it almost on the same level of shareware defrags, and it is absolutely valid practically for all the uses.

From the various tests that I have performed, JK Defrag reaches the best results in defrag quality between the free defraggers (better also than some paid defrag). The graphical user interface, instead, is not exceptional (the GUI of Defraggler is by far better).

It doesn't have need to be installed.

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RATING: TOP SOFTWARE!

Defraggler is the defrag app with the graphical user interface that I consider best among the competing free defraggers (while JK Defrag GUI is in my opinion the least beautiful one). The quality of defrag is very good, almost on the levels of JK Defrag GUI (perhaps at price of more defrag times). Defraggler works with precision both on file and and folders and free space.

Overall it is very good, thanks also to the beautiful GUI that helps the rating, even if JK Defrag GUI has resulted better in the defrag comparative.

Defraggler is the classical program that you can "introduce" to your friends....

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RATING: EXCELLENT