Difference between two grBLDC pieces

grBLDC - An Open Source CNC motor shield for Arduino Uno - grbl Compatible - Seeed Fusion Gallery (seeedstudio.com)

vs

GrBLDC, an Arduino shield for CNC: 3-axis stepper and digital BLDC spindle control - Seeed Fusion Gallery (seeedstudio.com)

They look the same to me. How are they different?