My Nintendo Switch reverse engineering attempts

He also made a pair of joycons controllable from a computer to enable twitchplaysnintendoswitch and TAS-speedrunning:

https://www.reddit.com/r/speedrun/comments/66poj6/i_made_a_t...

A little bit off topic but, there's a screenshot of some SPI analyzer thing. Looks quite nice! Anybody know what the application is called?

The screenshot: https://camo.githubusercontent.com/600d273da01fdefca1c72c27c...