Here is a list of funded projects:

https://nlnet.nl/project

If anybody wants to look depper into their claim of "proven success".

I browsed through it shallowly and didn't find any project that I know/use, nor were the projects which I have randomly clicked on any interesting, when they had a working, usable result at all and not just designs or proof of concepts.

I know it sounds cynical, but I honestly don't mean it negatively. I just wanted to look a bit into it because their claims seemed without substance to me.

But as I said I only looked at it very shallowly so far.