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ACI Worldwide

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Read 117 ACI Worldwide reviews and testimonials from customers, explore 114 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
  • 114 Case Studies View
  • 14 Customer Videos View
Customer Rating Review Score based on 4148 reference ratings
4.8/5.0 (4148)
  • Summer 2026 Market Leader Payment Gateway Software

117Testimonials

  • “I look forward to ACI’s product development in the collections space. I feel the company is actively seeking ways to help institutions in reducing student debt write-offs.”

  • "Our Company Is Experiencing Tremendous Growth. Payments Come In From All Over The Country So We Rely On Aci’s Support To Keep Chargebacks At A Minimum And Enact New Rules …

  • “When ACI came in, they really showed us there are various ways of thinking about this (payments). It was really brilliant how the ACI technical resources and our sales support …

116 more testimonials currently locked

114 Case Studies

  • LCEC Saves $3M a Year with Expanded Payment Options

  • Personalized Service Helps Hancock Bank Customize Risk Management and Decrease False Positives

  • HSBC Bank UK Creates a Highly Customized System

113 more case studies currently locked

14 Customer Videos

  • Co-op - Customer Success Story (Paul Fletcher - Solutions Specialist EMV Payments)
  • Delivering a Persona-Based Mobile Payments Experience
  • Scheels - Customer Success Story (Marc Windahl - Vice President )
13 more videos currently locked

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 114 businesses that use ACI Worldwide.

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