That's a great link, Alt-Tab is a fantastic utility! I've tried all the popular tools in this space, including Raycast's switcher, and they are all excellent at what they do.
My goal with Macscope was to address a slightly different problem. Most switchers answer the question "what app/window do I want to open?". I found my workflow often involved a second step: "...and now I need to use another tool to position it."
Macscope tries to be a combination of a switcher and an arranger, answering the question "open and where?" in a single action.
A feature I'm really happy with that illustrates this is the new "Placement Mode". You can use a dedicated hotkey (e.g., Ctrl+Opt+L) that tells Macscope "I'm about to switch to a window, and I want it to snap to the right half of the screen." When you select the window, it both switches and arranges in one fluid motion.
Thank you for sharing this! I've been using Witch Daemon for a while, but it does have the occasional glitches (esp. multi-screen setups). At first impression this is super-fast without lag, I'll keep testing it for a while.