Best app to switch between all open windows

Here's a list of all the options from this page:
["italicized & quoted notes are sourced from linked url"]

Mission Control and native keyboard shortcuts: ⌘+tab or ⌘+` (backtick)
AltTab ["macOS 10.12 to 12"] [$0 (free), open source]
Witch ["v4.3.8 requires macOS 10.10 Yosemite or newer"] [$14]
Hyperswitch ["Mountain Lion, Mavericks & Yosemite"; works on Sierra & High Sierra] [$0 Free] [window preview]
Contexts ["v3.7.1 Works on Mojave & Catalina"] [$9 after Free trial]
Optimal Layout [Snow Leopard or later] [$0 (free) but not currently actively developed]
Karabiner - ["macOS 11.0 Big Sur, macOS 10.15 Catalina"]
Senebier ["10.4 or later", last update in 2012]
Hammerspoon with hs.window.switcher [free and open source]
Command-Tab Plus ["macOS 10.12 or later and is fully macOs Monterey ready", 13.75 €]

Hyperswitch is free and works well. It also looks nice.

Update: ...but unfortunately as of May 2021 the app is not being updated anymore and has no native Apple Silicon (M1) support.

enter image description here

http://bahoom.com/hyperswitch

I'm guessing you're already aware, but for those searching the web there's always Ctrl+F4. No visual feedback, but it does switch between all windows for all apps (that are not hidden) with one command. Of course it's instant and so it doesn't reorder the list like ⌘+Tab does. I also got tired of Witch, but I decided that most of the time ⌘+` is all I need.

I've been using AltTab, an open source application, with success.