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fioDiskSpd
Free

Free and open source.

 Free

Free and open source from Microsoft.

Linux, Command line Windows, Command line
  • Highly configurable workloads through job files
  • Many I/O engines for different storage paths
  • Built and used by Microsoft's storage engineering teams
  • Highly configurable synthetic workloads
  • Steep learning curve for new users
  • Command-line only, no built-in graphical interface
  • Command line only, with many options to learn
  • Windows only
Downloadable app Downloadable app
Open source Open source
License: GPL-2.0 License: MIT
No account needed No account needed
Works offline Works offline

Checked September 23, 2026

Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.