CUDA-Z represents an Open Source system info tool developed out of a simple joke, as the creators themselves acknowledge on their site that it was born as a parody of other similar software.
The second funny fact is that it provides a rather different functionality. Whereas normal system info tools aim at basic system resources, this one will display information on GPUs, starting with drivers and ending with the .dll versions in the case, for some reason, you would like to know that.
Core capabilities and float point calculation of performance are integrated into this software, which may also show memory size and bandwidth.