I've been using Walker now for a few weeks on a laptop running Arch Linux with Niri.

I've used launchers on Windows (main computer for now) and macOS (work machine) and I have to say, Walker is really top tier. It blends into your environment and provides easy access to a number of useful things.

It does so many things right and it's a relatively new project so I'm sure there's more to come.

I'm not the author, just a happy user.