Payrails uses a single API to enable businesses to scale their payments and financial capabilities by way of smart payment routing and consolidated money movements. Analytics provide performance measurements and increased visibility into overall financial operations.

I like this idea because the payments industry has continued to get more complex, and almost no one has a single payment processor anymore.

TechCrunch: Payrails emerges from stealth with $6.4M led by a16z to build the OS for payments