Best O&O Defrag Professional Edition Alternatives in 2025

Looking for alternatives to O&O Defrag Professional Edition? In this comparison, we take a closer look at O&O Defrag Professional Edition alongside similar software solutions including O&O Defrag Professional Edition, UltraDefrag, Auslogics Disk Defrag, IObit Smart Defrag, Defraggler, PerfectDisk Professional and Auslogics Registry Defrag.

Our detailed comparison table highlights key features, pricing, and performance of these leading solutions, empowering you to make an informed decision. Whether you're seeking robust functionality, user-friendly design, or cost-effective alternatives, explore how O&O Defrag Professional Edition, UltraDefrag, Auslogics Disk Defrag, IObit Smart Defrag, Defraggler, PerfectDisk Professional and Auslogics Registry Defrag stack up to find the perfect software for your goals.

	Pricing Model	Operating System Support	Scheduling and Automation Features	User Interface and Ease of Use
O&O Defrag Professional Edition	Paid software with a relatively high price point and a free trial version.	Supports Windows 10 and other Windows operating systems.	Offers scheduled and automatic defragmentation with multiple defragmentation strategies.	User-friendly and intuitive interface with easy navigation suitable for different user needs.
UltraDefrag	Open-source software available free of cost with no hidden charges.	Supports most Windows operating systems including Windows XP through 10.	Includes built-in scheduling tool for daily, weekly or monthly defragmentation.	Simple, user-friendly interface designed to accommodate any skill level with comprehensive documentation.
Auslogics Disk Defrag	Free version available with additional paid Pro version offering more features.	Supports Windows XP (SP3) through Windows 10.	Includes scheduler for regular defragmentation sessions; supports automatic defragmentation.	Simple and user-friendly interface suitable for beginners and advanced users alike.
IObit Smart Defrag	Free utility tool; some features available in paid versions.	Supports Windows 7, 8, 8.1 and other Windows versions.	Provides scheduler and automatic defragmentation features including boot time defragmentation.	Easy-to-use interface with additional bundled software; multi-language support available.
Defraggler	Offers free and paid versions, including a portable version; some functionality limited in free version.	Supports Windows XP, Vista, 7, 8, and 10.	Features scheduled automatic defragmentation; supports scheduling on regular basis.	Safe and reliable tool with support forum; user interface supports multiple languages but has limited functionality in some aspects.
PerfectDisk Professional	Paid software with a perpetual license, subscription options, and a 30-day trial version.	Supports latest Windows operating systems including Server 2012 R2 and Windows 10.	Flexible scheduling options for automated maintenance tasks; supports regular updates scheduling.	Intuitive user interface designed for easy navigation while offering advanced customization options.
Auslogics Registry Defrag	Free version available with limited functionality; offers backup and restore options.	Supports Windows XP through Windows 8.	Built-in scheduler for automatic registry scans and defragmentation tasks.	User-friendly interface providing detailed reports and verification features for registry health monitoring.

Pricing Model

O&O Defrag Professional Edition	Paid software with a relatively high price point and a free trial version.
UltraDefrag	Open-source software available free of cost with no hidden charges.
Auslogics Disk Defrag	Free version available with additional paid Pro version offering more features.
IObit Smart Defrag	Free utility tool; some features available in paid versions.
Defraggler	Offers free and paid versions, including a portable version; some functionality limited in free version.
PerfectDisk Professional	Paid software with a perpetual license, subscription options, and a 30-day trial version.
Auslogics Registry Defrag	Free version available with limited functionality; offers backup and restore options.

Operating System Support

O&O Defrag Professional Edition	Supports Windows 10 and other Windows operating systems.
UltraDefrag	Supports most Windows operating systems including Windows XP through 10.
Auslogics Disk Defrag	Supports Windows XP (SP3) through Windows 10.
IObit Smart Defrag	Supports Windows 7, 8, 8.1 and other Windows versions.
Defraggler	Supports Windows XP, Vista, 7, 8, and 10.
PerfectDisk Professional	Supports latest Windows operating systems including Server 2012 R2 and Windows 10.
Auslogics Registry Defrag	Supports Windows XP through Windows 8.

Scheduling and Automation Features

O&O Defrag Professional Edition	Offers scheduled and automatic defragmentation with multiple defragmentation strategies.
UltraDefrag	Includes built-in scheduling tool for daily, weekly or monthly defragmentation.
Auslogics Disk Defrag	Includes scheduler for regular defragmentation sessions; supports automatic defragmentation.
IObit Smart Defrag	Provides scheduler and automatic defragmentation features including boot time defragmentation.
Defraggler	Features scheduled automatic defragmentation; supports scheduling on regular basis.
PerfectDisk Professional	Flexible scheduling options for automated maintenance tasks; supports regular updates scheduling.
Auslogics Registry Defrag	Built-in scheduler for automatic registry scans and defragmentation tasks.

User Interface and Ease of Use

O&O Defrag Professional Edition	User-friendly and intuitive interface with easy navigation suitable for different user needs.
UltraDefrag	Simple, user-friendly interface designed to accommodate any skill level with comprehensive documentation.
Auslogics Disk Defrag	Simple and user-friendly interface suitable for beginners and advanced users alike.
IObit Smart Defrag	Easy-to-use interface with additional bundled software; multi-language support available.
Defraggler	Safe and reliable tool with support forum; user interface supports multiple languages but has limited functionality in some aspects.
PerfectDisk Professional	Intuitive user interface designed for easy navigation while offering advanced customization options.
Auslogics Registry Defrag	User-friendly interface providing detailed reports and verification features for registry health monitoring.

Choosing the right software isn’t just about features. Size, license type, user ratings, and popularity also matter.

This quick comparison shows how O&O Defrag Professional Edition stacks up against O&O Defrag Professional Edition, UltraDefrag, Auslogics Disk Defrag, IObit Smart Defrag, Defraggler, PerfectDisk Professional and Auslogics Registry Defrag in these key areas—helping you find the best alternative for your needs.

	Size	License	Popularity
O&O Defrag Professional Edition		Commercial	77%
UltraDefrag		Commercial	2%
Auslogics Disk Defrag	7.4MB	Freeware	11%
IObit Smart Defrag	3.8MB	Freeware	100%
Defraggler	6.1MB	Freeware	30%
PerfectDisk Professional		Commercial	3%
Auslogics Registry Defrag	8.2MB	Freeware	0%

Size

O&O Defrag Professional Edition
UltraDefrag
Auslogics Disk Defrag	7.4MB
IObit Smart Defrag	3.8MB
Defraggler	6.1MB
PerfectDisk Professional
Auslogics Registry Defrag	8.2MB

License

O&O Defrag Professional Edition	Commercial
UltraDefrag	Commercial
Auslogics Disk Defrag	Freeware
IObit Smart Defrag	Freeware
Defraggler	Freeware
PerfectDisk Professional	Commercial
Auslogics Registry Defrag	Freeware

Rating

O&O Defrag Professional Edition
UltraDefrag
Auslogics Disk Defrag
IObit Smart Defrag
Defraggler
PerfectDisk Professional
Auslogics Registry Defrag

Popularity

O&O Defrag Professional Edition	77%
UltraDefrag	2%
Auslogics Disk Defrag	11%
IObit Smart Defrag	100%
Defraggler	30%
PerfectDisk Professional	3%
Auslogics Registry Defrag	0%