ACI Worldwide

ACI Worldwide offers solutions for bill payment processing through their bill payment engine API. They provide services for payments authorization, processing, and remittance. Their solutions cater to the banking and payments industry.

ACI Worldwide provides bill payment APIs and SDKs, enabling payment authorization, processing, and remittance. This aligns with the 'payment-processing' and 'developer-api-integration' features. The website content highlights their solutions for banking and payments, indicating a focus on payment infrastructure.