F3 is described as 'open source that assesses the real capacity of USB sticks and other media'. There are four alternatives to F3 for Windows, Linux and Mac. The best alternative is H2testw, which is free. Other great apps like F3 are Quick Disk Test (Free, Open Source), USB Flash Drive Tester (Free) and CapacityTester (Free, Open Source).
- 4 alternatives
- Tool to test a USB drive or memory card to find out if it's a fake. The tool performs a simple test to determine if the full capacity is usable or not. All it does is fill the volume with test data and verify if the data on the volume is correct. View 6 alternatives to CapacityTester
- Free • Open Source