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.

Klarna specializes in providing payment solutions and services within the e-commerce sector. The company offers a platform for online shopping that includes price comparisons, deals, and various payment options to facilitate purchases for consumers. Klarna primarily serves the e-commerce industry by enabling a seamless shopping experience through its payment and financing services. It was founded in 2005 and is based in Stockholm, Sweden.

PayNearMe develops technology to facilitate the end-to-end customer payment experience. It offers a billing and payment platform. Its platform helps users pay with cash for a range of goods and services from companies in e-commerce, property management, consumer finance, and transportation, enabling businesses and government agencies as well as retail stores to digitize cash collection processes. PayNearMe was formerly known as Handle Financial. The company was founded in 2009 and is based in Santa Clara, California.

Pine Labs offers cloud-based point-of-sale (PoS) payment solutions. The company allows merchants to accept credit or debit card payments, as well as methods such as e-wallets, quick response (QR) code payment solutions, and unified payments interface (UPI)-based solutions. The company was founded in 1998 and is based in Noida, India.

Previse specializes in accelerating B2B payments through data-driven solutions in the financial technology sector. The company offers services that enable instant invoice payments and supply chain payment optimization using artificial intelligence to assess invoices and facilitate early payments. Previse's solutions cater to large enterprises looking to improve their working capital efficiency and supplier payment processes. It was founded in 2016 and is based in London, England.

Satispay is a financial technology company focused on simplifying payments through its mobile application within the digital payments industry. The company offers a platform for individuals to send and receive money, pay in stores and online, and save with features like cashback, while businesses can benefit from a payment method with low commission fees. Additionally, Satispay provides digital meal vouchers as part of its welfare solutions for companies and their employees. It was founded in 2013 and is based in Luxembourg City, Luxembourg.