F3
F3 is an open source command-line tool that assesses the real capacity of USB sticks and other media. An advantage over other tools is, that it does not need administrative rights to access the device.
Features
Properties
- Lightweight
Features
- Works Offline
- Ad-free
- Command line interface
- Benchmark
Tags
- hardware-utility
- usb-test
- test-hardware
- usb-capacity
F3 News & Activities
Recent News
Recent activities
- Sneetsher updated F3
- 3rd reviewed F3
Awesome! Well, except for mac users ignorant of command line :D Gee, mac is unix, too! On linux my weapon of choice for testing sd cards, sticks (usually contain cards!) and even SSD/NVMe. However, despite constantly showing the speed during tests and at the end, it would be nice if it would show also the speed per each h2w-block: Thus one could see when a device starts throttling. Perhaps in some future version?^^ *pretty-please* Havent seen corrupt cards/stick in years now but speed is more...
- Sneetsher replied to a comment / review on F3
- Sneetsher rated F3
Well I'm surprised such tool exists. I used to verify SD's and Flash pens with full write format or copy of large files till full which used to take long.
I kept 2 fake SD (claiming of being 64GB) to test softwares. F3 is very fast compared (3-7min) to them manual tests.
Now, I have the tool I could relay on, crashed those fake SD's.
- Sneetsher liked F3
- 3rd reviewed F3
Awesome! Well, except for mac users ignorant of command line :D Gee, mac is unix, too! On linux my weapon of choice for testing sd cards, sticks (usually contain cards!) and even SSD/NVMe. However, despite constantly showing the speed during tests and at the end, it would be nice if it would show also the speed per each h2w-block: Thus one could see when a device starts throttling. Perhaps in some future version?^^ *pretty-please* Havent seen corrupt cards/stick in years now but speed is more...
- Hardware5286 liked F3
What is F3?
F3 is an open source command-line tool that assesses the real capacity of USB sticks and other media. An advantage over other tools is, that it does not need administrative rights to access the device.
F3 information
Developed by
Digirati / Michel Machado Licensing
Open Source (GPL-3.0) and Free product.Written in
Alternatives
7 alternatives listedSupported Languages
- English
AlternativeTo Categories
OS & Utilities, System & HardwareGitHub repository
- 3,088 Stars
- 162 Forks
- 76 Open Issues
- Updated
Comments and Reviews
Well I'm surprised such tool exists. I used to verify SD's and Flash pens with full write format or copy of large files till full which used to take long.
I kept 2 fake SD (claiming of being 64GB) to test softwares. F3 is very fast compared (3-7min) to them manual tests.
Now, I have the tool I could relay on, crashed those fake SD's.
It says it's available for Mac but this is misleading. You really need to know how to run commands via terminal, and there's no DMG file at all. You need to be quite savvy to run this on your Mac, I was unable to run it at all.
You do not know how to use your computer, just get a smartphone ,maybe ? :s
It is using homebrew. For users familiar with CLI apps and command line tools.
Awesome! Well, except for mac users ignorant of command line :D Gee, mac is unix, too! On linux my weapon of choice for testing sd cards, sticks (usually contain cards!) and even SSD/NVMe. However, despite constantly showing the speed during tests and at the end, it would be nice if it would show also the speed per each h2w-block: Thus one could see when a device starts throttling. Perhaps in some future version?^^ *pretty-please* Havent seen corrupt cards/stick in years now but speed is more and more a serious issue (and false advertising thereof). Until then one can always fall back to gnome disks and benchmark accordingly the whole 100% and get a nice graph, of course...