Visa Inc. operates as a payment technology company in the United States and internationally. The company operates VisaNet, a transaction processing network that enables authorization, clearing, and settlement of payment transactions. It also offers credit, debit, and prepaid card products; tap to pay, tokenization, and click to pay services; Visa Direct, a solution that facilitates the delivery of funds to eligible cards, bank accounts, and digital wallets; Visa B2B Connect, a multilateral business-to-business cross-border payments network; Visa Cross-Border Solution, a cross-border consumer payments solution; and Visa DPS that provides a range of value-added services, including fraud mitigation, dispute management, data analytics, campaign management, a suite of digital solutions, and contact center services. The company also provides acceptance solutions, which include Cybersource and Authorize.net that provides new and enhanced payment integrations with ecommerce platforms, enabling sellers and acquirers to offer tailored commerce experiences; risk and identity solutions, such as Visa Advanced Authorization, Visa Secure, Visa Consumer Authentication Service, Visa Protect Authentication Intelligence, and Visa Provisioning Intelligence; and Visa Consulting and Analytics, a payment consulting advisory services. It provides its services under the Visa, Visa Electron, Interlink, V PAY, and PLUS brands. The company serves merchants, financial institutions, and government entities. Visa Inc. was founded in 1958 and is headquartered in San Francisco, California.

Mastercard Incorporated, a technology company, provides transaction processing and other payment-related products and services in the United States and internationally. The company offers integrated products and value-added services for account holders, merchants, financial institutions, digital partners, businesses, governments, and other organizations, such as programs that enable issuers to provide consumers with credits to defer payments; payment products and solutions that allow its customers to access funds in deposit and other accounts; prepaid programs services; and commercial credit, debit, and prepaid payment products and solutions. It also provides solutions that enable businesses or governments to make payments to businesses, including Virtual Card Number, which is generated dynamically from a physical card and leverages the credit limit of the funding account; a platform to optimize supplier payment enablement campaigns for financial institutions; and treasury intelligence platform that offers corporations with recommendations to enhance working capital performance and accelerate spend on cards. In addition, the company offers Mastercard Send, which partners with digital messaging and payment platforms to enable consumers to send money directly within applications to other consumers; and Mastercard Cross-Border Services enables a range of payment flows through a distribution network with a single point of access to send and receive money globally through various channels, including bank accounts, mobile wallets, cards, and cash payouts. Further, it provides cyber and intelligence solutions; insights and analytics, consulting, marketing, loyalty, processing, and payment gateway solutions for e-commerce merchants; and open banking and digital identity services. The company offers payment solutions and services under the MasterCard, Maestro, and Cirrus name. Mastercard Incorporated was founded in 1966 and is headquartered in Purchase, New York.

Fiserv, Inc., together with its subsidiaries, provides payments and financial services technology services in the United States, Europe, the Middle East and Africa, Latin America, the Asia-Pacific, and internationally. It operates through Merchant Acceptance, Financial Technology, and Payments and Network segments. The Merchant Acceptance segment provides merchant acquiring and digital commerce services; mobile payment services; security and fraud protection products; Clover, a cloud based POS and integrated commerce operating system for small and mid-sized businesses and independent software vendors; and Carat, an integrated operating system for large businesses. This segment distributes through various channels, including direct sales teams, strategic partnerships with agent sales forces, independent software vendors, financial institutions, and other strategic partners in the form of joint venture alliances, revenue sharing alliances, and referral agreement. The Financial Technology segment offers customer deposit and loan accounts, as well as manages an institution's general ledger and central information files. This segment also provides digital banking, financial and risk management, professional services and consulting, check processing, and other products and services. The Payments and Network segment offers card transactions, such as debit, credit, and prepaid card processing and services; funds access, debit payments, cardless ATM access, and surcharge-free ATM network; security and fraud protection products; card production; print services; and various network services, as well as non-card digital payment software and services, including bill payment, account-to-account transfers, person-to-person payments, electronic billing, and security and fraud protection products. It serves merchants, banks, credit unions, other financial institutions, and corporate clients. Fiserv, Inc. was incorporated in 1984 and is headquartered in Milwaukee, Wisconsin.

ACI Worldwide, Inc., a software company, develops, markets, installs, and supports a range of software products and solutions for facilitating digital payments in the United States and internationally. The company operates in three segments: Banks, Merchants, and Billers. The company offers ACI Acquiring, a solution to process credit, debit, and prepaid card transactions, deliver digital innovation, and fraud prevention; ACI Issuing, a digital payment issuing solution for new payment offering; and ACI Enterprise Payments Platform that provides payment processing and orchestration capabilities for digital payments. It also provides ACI Low Value Real-Time Payments, a platform for processing real-time payments; and ACI High Value Real-Time Payments, a payments engine that offers multi-bank, multi-currency, 24x7 payment processing, and SWIFT messaging. In addition, the company offers ACI Payments Orchestration Platform for optimizing payments; omni-channel payment platform; ACI Fraud Management, a real-time approach to fraud management; and ACI Speedpay, an integrated suite of digital billing, payment, disbursement, and communication services. The company offers electronic bill presentment and payment services to consumer finance, insurance, healthcare, higher education, utility, government, telecommunications, and mortgage sectors; implementation services, include product installations and configurations, and custom software modifications; and business and technical consultancy, on-site support, product education, and testing services, as well as distributes or acts as a sales agent for software developed by third parties. It markets its products under the ACI Worldwide brand. The company was formerly known as Transaction Systems Architects, Inc. and changed its name to ACI Worldwide, Inc. in July 2007. The company was founded in 1975 and is based in Elkhorn, Nebraska.

Paymentus Holdings, Inc. provides cloud-based bill payment technology and solutions in the United States and internationally. The company offers electronic bill presentment and payment services, enterprise customer communication, and self-service revenue management to billers through a software-as-a-service technology platform. Its platform's payment processing includes credit cards, debit cards, eChecks, and digital wallets. It serves utility, financial service, government, insurance, telecommunication, real estate management, education, consumer finance, healthcare, and small business industries. The company was founded in 2004 and is headquartered in Charlotte, North Carolina.

Repay Holdings Corporation, payments technology company, provides integrated payment processing solutions to industry-oriented markets in the United States. It operates through two segments: Consumer Payments and Business Payments. The company's payment processing solutions enable consumers and businesses to make payments using electronic payment methods. It also offers a range of solutions relating to electronic payment methods, including credit and debit card processing, automated clearing house (ACH) processing, e-cash, and digital wallet services; virtual credit card processing, enhanced ACH processing, instant funding, clearing and settlement, and communication solutions; and proprietary payment channels that include Web-based, virtual terminal, online client portal, mobile application, text-to-pay, interactive voice response, and point of sale services. It serves customers primarily operating in the personal loans, automotive loans, receivables management, and business-to-business verticals through direct sales representatives and software integration partners. The company was founded in 2006 and is headquartered in Atlanta, Georgia.

Paysign, Inc. provides prepaid card programs, comprehensive patient affordability offerings, digital banking services, and integrated payment processing services for businesses, consumers, and government institutions. Its product offerings include solutions for corporate rewards, prepaid gift cards, general purpose reloadable debit cards, employee incentives, consumer rebates, donor compensation, clinical trials, healthcare reimbursement payments and pharmaceutical payment assistance, and demand deposit accounts accessible with a debit card. The company markets its prepaid card solutions under the Paysign brand. Its primary market focus is on companies and municipalities that require a streamlined payment solution for rewards, rebates, payment assistance, and other payments to their customers, employees, agents, and others. The company was formerly known as 3PEA International, Inc. and changed its name to Paysign, Inc. in April 2019. Paysign, Inc. was incorporated in 1995 and is headquartered in Henderson, Nevada.

AppTech Payments Corp., a financial technology company, provides electronic payment processing technologies and merchant services in the United States. Its merchant transaction services offer processing payments for credit and debit cards through point-of-sale equipment, e-commerce gateways, periodic automatic clearing house payments, and gift and loyalty programs. The company also offers integrated solutions for frictionless digital and mobile payment acceptance, as well as multi-use case, multi-channel, API-driven, and account-based issuer processing for card, digital tokens, and payment transfer transaction services; hosted ecommerce checkout, a flexible payment gateway; and text payment technology, alternative payment methods (APMs), and contactless payments. In addition, it provides FinZeo, a fintech platform. The company was formerly known as AppTech Corp. AppTech Payments Corp. was incorporated in 1998 and is headquartered in Carlsbad, California.