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Head-to-head · Disk Defragmentation Software

Disk SpeedUp vs UltraDefrag

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score Disk SpeedUp #2 in Disk Defragmentation Software 9.2/10 Free plan Free plan✓ 3 of 3 features Visit Disk SpeedUp

Disk SpeedUp leads on 1 check, UltraDefrag on 0, and 3 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreDisk SpeedUp · 9.2/10
  • Free planonly Disk SpeedUp

Disk SpeedUp scores higher on our rubric for disk defragmentation software: 9.2 against 8.6 out of 10; our editors rank them #2 and #4.

Disk SpeedUp offers free plan; UltraDefrag doesn't.

Disk SpeedUp is the better fit for free Windows defragmentation and SSD optimization. UltraDefrag is the better fit for windows users needing portable and CLI tools.

  • Disk SpeedUp fits best

    Free Windows defragmentation and SSD optimization

  • UltraDefrag fits best

    Windows users needing portable and CLI tools

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Side by side

Feature Disk SpeedUp 9.2/10 Visit ↗ UltraDefrag 8.6/10 Visit ↗
At a glance
Editor score 9.2 8.6
Ranking #2 in Disk Defragmentation Software #4 in Disk Defragmentation Software
Best for Free Windows defragmentation and SSD optimization Windows users needing portable and CLI tools
Pricing model Free Paid
Starting price Free plan —
Free plan ✓ (best) —
Free trial — —
Deployment Desktop Desktop
Platforms Windows Windows
Support Email, Docs Email, Docs · 24/7
Built for Solo, Small business Solo, Small business, Mid-market, Enterprise
Features Disk SpeedUp 3/3 · UltraDefrag 3/3
Scheduled optimization ✓ ✓
Automatic optimization ✓ ✓
Boot-time optimization ✓ ✓
Specs
Drive types Both Both
Filesystem support Multi-filesystem Multi-filesystem
Maximum drive count Not checked yet Not checked yet
Our review
Pros
  • Supports both HDD and SSD optimization
  • Includes scheduled, automatic, and boot-time defragmentation
  • Offers exclusion lists and multiple optimization modes
  • Supports HDDs and SSDs, including TRIM for SSDs
  • Offers scheduled, idle, boot-time, file-level, and CLI operations
  • Includes portable tools and SMART disk health monitoring
Cons
  • Runs on Windows systems only
  • Not open source
  • Focused on disk defragmentation and optimization
  • Paid software with no free plan
  • Windows-only platform support
  • Standard licensing covers up to 3 computers
Our verdict

Disk SpeedUp is a free Windows utility for analyzing, defragmenting, and optimizing disk drives. It supports both HDD and SSD storage, making it suitable for Windows users who want one tool for visual fragmentation analysis, conventional…

Read the review →

UltraDefrag is disk defragmentation and optimization software for Windows computers and Windows Server systems. It is suited to users who need more control than basic drive maintenance provides, including scheduled or idle automation,…

Read the review →
  1. Disk SpeedUpDisk Defragmentation Software 9.2Free plan
  2. UltraDefragDisk Defragmentation Software 8.6Paid

Strengths and trade-offs

  • Disk SpeedUp — where it wins

    • Supports both HDD and SSD optimization
    • Includes scheduled, automatic, and boot-time defragmentation
    • Offers exclusion lists and multiple optimization modes

    Where it doesn't

    • Runs on Windows systems only
    • Not open source
    • Focused on disk defragmentation and optimization
  • UltraDefrag — where it wins

    • Supports HDDs and SSDs, including TRIM for SSDs
    • Offers scheduled, idle, boot-time, file-level, and CLI operations
    • Includes portable tools and SMART disk health monitoring

    Where it doesn't

    • Paid software with no free plan
    • Windows-only platform support
    • Standard licensing covers up to 3 computers

More comparisons

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update