MPC Hello
Welcome to the hello-world of MPC (view source).
To start, one party should click host. This will generate a code that the other party can use to join. It's an end-to-end encrypted P2P connection. There is no server.
Once connected, both parties will enter a number. Each party will only be informed whether their number is the largest or not, but both numbers are kept cryptographically secret.
This is just a simple example, but mpc-framework makes it easy to do this with any function.