Embedded-finance provider tracked in the Embedded Finance Index — disclosed by 4 companies across 1 category.
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ACI Worldwide was founded in 1975 as Transaction Systems Inc., originally providing payment software to banks and processors. Over decades it evolved into a global payments infrastructure company serving banks, intermediaries, billers, and merchants through on-premise and SaaS-based real-time payment, bill presentment, and merchant acquiring platforms. Its eCommerce Connectors network connects hundreds of global acquirers and alternative payment methods, positioning it as middleware between merchants and the financial system. A 2024 go-private transaction with Siris Capital Group signals a shift toward deeper infrastructure investment away from public market pressures.
Other PSP providers in the index, by the number of companies that disclose them. A count of public disclosures, not a ranking of the products.
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<img src="https://www.embeddedfinanceindex.com/api/badge/aci-worldwide/install" width="1" height="1" alt="" style="display:none">4 companies disclose ACI Worldwide in their stack in the Embedded Finance Index 2026, including State Bank of India, Rabobank, Aci and Gr4vy.
ACI Worldwide is an embedded-finance provider in PSP. It ranks #85 of 538 PSP providers by disclosed buyers.
The most-disclosed PSP alternatives to ACI Worldwide are Stripe (783 buyers), Adyen (278 buyers), PayPal (153 buyers), Checkout.com (113 buyers), Worldpay (89 buyers) and Mollie (64 buyers).
ACI Worldwide is founded in 1975 and headquartered in Coral Gables, Florida, USA.
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