This maybe a bit redundant -- but IMO it's always worth a quick stop at `https://alternativeto.net/` since you can specify OS & License types, etc and read a few reviews.

I've also started to find some neat stuff with `https://github.com/trending` - has been good for finding some good jumping-off points for subjects where I don't always have my finger on the pulse.

It's nice to get out of the echo-chamber and see what the other side of the shop is innovating. It helps me solve problems in ways I might not have come up with - and I've thankfully made lots of friends in Art, Design, UI/UX, and FrontEnd now because of it...so it's easier to keep up with for me now.

I don't think that's an especially hot take on HN though, but just putting it out there in case someone needed to hear it.