fio - Generate I/O for benchmarking, stress testing, verification or workload reproduction purposes.

USBDeview - USBDeview is a software that lists all USB devices that connected to your computer, and allows you disable, enable or uninstall them.

CrystalMark - CrystalMark is a full included benchmark application that can be utilized for surveying the execution and capacities of a PC.

FakeFlashTest - Tests USB Flash drives and Flash memory SD cards to determine if they are fake (not full capacity).

Iometer - As the Iometer Users Guide says, Iometer is an I/O subsystem measurement and characterization tool...

CapacityTester - Tool to test a USB drive or memory card to find out if it's a fake.