Linux

Well, I wouldn't call Kdenlive a hidden gem. It's well known and one of the most used video editing software on Linux.

I also want to encourage others to try it out, who had bad experience in the past. I use Kdenlive for years (mostly memes, from time to time some more complex videos) and in the past it was incredibly unstable and was crashing constantly. But overall it's pretty stable now. I miss a bit of extra features and such which I saw from other editors, but that shouldn't be a big deal. The core editing set is good to me.