Worldpay and PayPal are both payment processors. They allow businesses to accept payments from customers online and in-store. However, there are some key differences between the two companies. Worldpay is a global company, with offices in over 40 countries. PayPal is a US company, with offices in just 18 countries. Worldpay is a much larger company than PayPal. In 2017, Worldpay processed $817 billion in payments, while PayPal processed $282 billion.