AquaSnap - Hotkey to freely resize and move window with mouse
So, at the moment I'm using another software to manage my windows besides AquaSnap, KDE Mover-Sizer. It mainly can do two things, when holding ALT you can move (left click) or resize (right click) any window, independent of its state, Borderless or Fullscreen.
So, as an example of a really handy scenario, with both of them, I can enable Firefox's Fullscreen mode (F11), use KDE Mover-Sizer to make it a small borderless window and move it to the bottom-right corner and use AquaSnap to make it always on top and semi-transparent. Now I have a Picture in Picture mode of any video site, YouTube, Twitch (even with the chat if you don't put the player on Fullscreen), Giant Bomb...
Can you take a look at it, how it works and consider adding it's functions to AquaSnap?
http://corz.org/windows/software/accessories/KDE-resizing-moving-for-Windows.php