Happy to see it get love and spread the word. alternativeto.net is my go to. Worthy of muscle memory. I've also found great options in the awesome lists on github. Especially awesome self-hosted if we're talking software. I thought I remember an alternativeto-like site geared towards cli, but I couldn't find it last time I looked. LMK if that rings a bell for anyone.
Never have I ever read a single book or watched a single movie of the Harry Potter series.