F3 is an open source 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.
Cost / License
- Free
- Open Source
Platforms
- Mac
- Windows
- Linux


Comments about F3 as an Alternative to H2testw
Better than. Has same functionality (even can produce h2testw files) BUT HAS MORE. Probe facility to rapidly identify known fakes - much much quicker than h2testw. runs on macs as well as linux and doze. Open source. Brew designed to help learn techniques of fakery - if you are interested.
open source and being developed further


Almost everyone thinks F3 is a great H2testw alternative.
F3 is the most popular Mac & Linux alternative to H2testw.
F3 is the most popular Open Source alternative to H2testw.
- F3 is Free and Open Source











it's open source and cross-platform