UltraDefrag is an open-source disk defragmenting utility for Microsoft Windows. Developed by Dmitri Arkhangelski and Justin Dearing
License: Open Source
Auslogics Disk Defrag is known for its speed and user-friendly interface, making it suitable for casual users. In contrast, UltraDefrag is an open-source tool that offers lightweight and customizable options, appealing more to advanced users who prefer flexibility.