Open MicroManipulator is an open XYZ micromotion platform combining stepper motors and feedback control. Its repository specifies approximately 50-nanometer movement resolution and a 30 kHz control loop, while explicitly noting that actual accuracy is lower and thermal drift and mechanical calibration matter. It can be controlled through USB serial G-code and a Python API. A separate GUI repository shows camera video, three-point plane alignment, and basic G-code execution, but these tools do not guarantee independently validated nanometer-scale absolute accuracy.