USB test instrument

microcontroller-based FPGA / JTAG programmer

Amaranth HDL framework for monitoring, hacking, and developing USB devices

a DFU-compatible bootloader for SAMD11 and SAMD21 microcontrollers

Production test jig for Cynthion

python library providing utilities, data structures, constants, parsers, and tools for working with USB data

Amaranth HDL libary for building USB-capable SoC designs.

GreatFET firmware and host software

Implement your own USB device in Python, supported by a hardware peripheral such as Cynthion or GreatFET