I fell for this when I was a kid on Byond. The idea guy thought he was J. R. R. Tolkien. My sprite artist friend joined me. He was vague about what he wanted and even though we had been making everything he asked of us he brought another coder in, a couple years younger than me, I was a teen and he was 13. When he was given my code he called me boring and started throwing together some stuff. He ended up writing... Source: about 3 years ago

Then, I can only suggest http://hammerspoon.org/ and then you can start implementing window movement using it https://www.hammerspoon.org/go/#winmoveintro. Source: about 1 year ago

MacOS doesn't do this natively, but you have options: - If you just want to move windows around with some degree of keyboard customization, go for Rectangle. - If you want more control, such as sizing a bunch of windows at the same time, use Slate. - If you can code and want really high degrees of customization, you won't go wrong with Hammerspoon. Source: almost 2 years ago

Both of those can be replaced by the open-source Hammerspoon (actually a significant number of the things in this thread can, including BTT). Source: about 2 years ago

Depending on what you want from KM, Hammerspoon may be a good alternative. You can also look up on AlternativeTo for other options. Source: over 2 years ago