Two categories, broadly: any professional software, with deep features and professional quality.

I know theres audacity, but that's really not an acceptable saw.

I know theres a few cad apps, but no professional I've ever met finds the good enough.

I know gimp, and I use it, but no artist I know does; they all pirate Photoshop. Literally every one.

I like having audacity to record audio. I like having gimp to fuck with shit. I like having various cad apps to bang out organizational tools to print. These things do generally fit my use case. But I still have to help people pirate everything else and god the DRM is do fucking annoying.

Abd here's the more esoteric ask:

Not so much programs as features; Why aren't we really going all in on shit we can do that they can't? Features capitalists would never add, never support? Instead I find open source software always playing catch-up, and theres no reason it has to.