There's a lot of people interested in helping the poor. There's humongous social and political barriers that make it almost impossible.

Ideas I have:

-Make a centralized site for homeless people to find resources. At the moment they're all scattered.

-Make an easy to use food stamp app.

-Ride sharing apps

-Apps showing where buses are and how far away they are so poor people aren't just sitting at the bus stop waiting.

-and there's a lot more.

However a quick look at all these requires technological literacy by the poor, governmental cooperation, or both.

It's not just an easy tech problem to solve. It's a social problem.