They are QT GUI applications. The first example communicates with on-board (STM32F4Discovery board) MEMS gyroscope(L3GD20) and plots graph of gyro data. The second is a compass application that captures data from on-board MEMS E-compass(LSM303DLHC) and shows direction relative to the geographic cardinal directions. The GitHub repo: https://github.com/remotemcu/remcu_examples/tree/master/stm32f3_discovery