JkDefrag
FREE
A free and open-source disk defragmenter for Windows.
About
JkDefrag is a free and open-source disk defragmenter for Windows that is designed to be fast and efficient. It's based on the standard defragmentation API.
Pricing
Pricing Type
Free
Free tier available
Billing
One-time payment
Last checked: February 22, 2026
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Key Facts
Categories
Platforms
Windows
Company
JkDefrag
Founded
Founded in 2006
Industry
Technology
Country
Global
Language
English