Long term, what project do you believe will have the most real world application?

Cardano was one of the first cryptos I was introduced to and the sub is full of information about what they are doing in Africa and stuff being developed on the blockchain etc. I'm sure everyone knows what I'm talking about. And I'm also sure a lot of other subs are the same. I think Ada is far from the only one, and I know a lot of people don't believe in it at all – but that's besides the point.
What do you truly believe in, as a Project which will get a lot of real practical use in the world?