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ACI Worldwide

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Read 117 ACI Worldwide reviews and testimonials from customers, explore 105 case studies and customer success stories, and watch 14 customer videos to see why companies chose ACI Worldwide as their Payment Gateway Software

ACI Worldwide, the Universal Payments (UP) company, powers electronic payments for more than 5,100 organizations around the world. More than 1,000 of the largest financial institutions and intermediaries, as well as thousands of global merchants, rely on ACI to execute $14 trillion each day in payments and securities. In addition, a myriad of organizations utilize their electronic bill presentment and payment services. Through their comprehensive suite of software solutions delivered on customers’ premises or through ACI’s private cloud, they provide real-time, immediate payments capabilities and enable the industry’s most complete omni-channel payments experience.

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  • 117 Testimonials View
  • 105 Case Studies View
  • 14 Customer Videos View
Customer Rating Review Score based on 3997 reference ratings
4.7/5.0 (3997)
  • Summer 2025 Market Leader Payment Gateway Software

117Testimonials

  • “Bank of Abyssinia went live with the ACI Issuing solution in just nine months from contract signature, thanks to a nimble, aligned and agile project implementation.”

  • "We selected ACI because of its proven real-time solution, which reliably and extensibly manages increased transaction volumes as adoption grows. ACI’s up immediate payments solution offers the high performance and …

  • "ACI has guided us through a number of difficult challenges and enabled our business to flourish, drastically reducing our risk levels and costs while supporting the expansion of our existing …

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105 Case Studies

  • Enabling Dynamic Growth Through Integrated Payment Solutions

  • Monroe County Water Authority Gives 200,000 Customers Easy Pay Option

  • Top-25 Bank Boosts Loan Portfolio Performance with Debit Card Payment Processing

104 more case studies currently locked

14 Customer Videos

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Additional ACI Worldwide Information & Resources

Read ACI Worldwide Reviews, Testimonials & Customer References from 117 real ACI Worldwide customers.

Browse ACI Worldwide Case Studies, Customer Success Stories, & Customer References from 105 businesses that use ACI Worldwide.

Watch ACI Worldwide Customer Videos to learn why 14 businesses chose ACI Worldwide.