waterfall

Wonder how this kind of software works or what it would even be so he could monitor 10-12-15m? Some how hooked to his At or Radioddity?

i have my X6100 connected to my Mac... WSJT-X was running fine... i'm not sure what's going on now, but i get an amazing waterfall and reception from stations all over the world... but recently, for reasons i cannot figure out... when i transmit, the waterfall goes black and the computer stops...