I wasn't satishfied with existing applications for binding joystick to keyboard inputs. I couldn't find a single tool that could mimic analog controls by PWMing/pulsing keystrokes, so I made my own, so I could finally have proper support for my joystick in games that didn't support it (Mainly GTA online for helicopter ownage)

Its mostly useful for stuff like that, making bad PC ports work with joysticks, but I guess you could use it for accesibility as well as it also can bind mouse to joystick etc.

I also attempted to make a HTML5 player for an old physics sandbox game called Phun / algodoo. It kinda worked, but I put it on hold because I got annoyed by some problems I had with the physics engine I used (LiquidFun)