LiteStep is an Open Source Windows Shell replacement that was originally made for Windows 98. It was meant to replace the Explorer Shell of Windows with a less system resource using AfterStep funktion-alike. It worked well up until windows 7, but then the tight coupling between the Metro applications and Explorer made it progressively less feasible to use with each new Windows release.
I made a few modules for it in delphi over the years and I will put up the sources and some screnshot here when I feel like it. I kept using it exclusively till 2019 when I gave up and switched to Linux (KDE is just as configureable as LiteStep was).