NUtils

NUtils is a hotkey-driven window manager for Windows, built with screen-reader users in mind. It hides windows, brings them back, and makes them transparent with a keystroke, so you can keep lots of things open without them cluttering your taskbar, your Alt+Tab list or your screen.

It was originally written in AutoIt (2008–2010) by Niko Carpenter and Tyler Spivey (original project). Version 4 is a complete rewrite in Rust on the native Win32 API; its source is at https://github.com/jonathans859/nutils.