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Stripe operates as a technology company that specializes in online payment processing and financial infrastructure for Internet businesses. The company provides a suite of products that enable businesses to accept payments, manage billing and subscriptions, handle in-person transactions, and integrate various financial services into their operations. Its platform is designed to support startups, enterprises, and everything in between with scalable, API-driven solutions. Stripe was formerly known as DevPayments. It was founded in 2010 and is based in South San Francisco, California.

Worldpay provides electronic payment processing services to merchants and financial institutions. It offers merchant acquiring and payment processing services, such as authorization and settlement, customer service, chargeback and retrieval processing, and interchange management for national merchants, and regional and small-to-medium-sized businesses. The company was founded in 1993 and is based in London, United Kingdom.

Rapyd is a fintech company specializing in global payment processing and financial technology solutions. The company offers a platform for businesses to accept payments online, send payouts, and manage multi-currency accounts, with a focus on simplifying financial transactions across borders. Rapyd's services cater to various sectors including eCommerce, marketplaces, and the gig economy. Rapyd was formerly known as CashDash. It was founded in 2016 and is based in London, England.

BlueSnap, formerly Plimus, is a flexible payment solutions provider delivering a customizable platform to global online businesses such as software publishers, web hosting companies, and online retailers. BlueSnap builds and manages online businesses for software publishers, web hosting companies and online retailers. A business can choose BlueSnap hosted application that spans the entire e-Commerce lifecycle, or it can deploy the BlueSnap API which allows retailers to integrate the technology with existing solutions. Using BlueSnap software, retailers can deliver newsletters to customers, coupons and promotions, realtime reporting, and live chat amongst other features.

FusionPay is a pay-tech company that operates in the financial technology sector. The company provides integrated mobile payment solutions, enabling customers to make payments without the need for currency exchange, and settles these payments in the merchant's preferred currency. FusionPay primarily serves the ecommerce industry. It was founded in 2018 and is based in London, England.

PPRO operates in the digital payments infrastructure domain. The company offers services that enable businesses and banks to expand their checkout, acquiring, and risk services through a single connection. Its infrastructure provides access to various payment methods, fraud screening tools, and other essential products from multiple providers, all of which can be managed and controlled digitally. The company primarily serves the financial technology industry. It was founded in 2006 and is based in London, United Kingdom.