You know, I thought of this one too, even though it seemed to "HN-y." But it really is something that almost demands gratitude---thousands (probably more like millions) of people have slaved away at making software work (and I know what that can be like), and I get to use the fruits of their labors. It's humbling.

This. I did opensource almost a decade ago as a learning exercise. I am thankful for it to have it as a learning platform while giving something back.

I am also thankful for it on the receiving end. The world is so much better because of it

Truly, there is a lot to be thankful in that area. Specially in regards to open source developers

Free software.