R S Software (India) Limited provides software solutions to electronic payment industries in India, the United States, the United Kingdom, and Japan. It engages in the development, testing, and maintenance of software products. The company's products include RS RTPS, a payment processing platform for retail and corporate customers, merchants, and governments; RS DigitalEdge, a payment API for banks and fintechs; RS RealEdge, a payment platform for banks and payment service providers to communicate with RTPS and core banking systems; RS BillAbhi-Central, a hub-and-spoke architecture bill payment solution for billers and consumers, which is serviced through operating units; RS BillAbhi-Bank, a bill payment service with multiple payment options; RS IntelliEdge – Central and RS IntelliEdge – Banks, which are fraud management solutions for central infrastructures and financial institutions; RS iFinSwitch, a payment processing platform, which supports EMV transactions; RS MerchantEdge, a merchant onboarding and management platform; and RS Test2Pay 3DS2.0, a test simulator platform for payment processors to test their access control servers. It also offers payments modernization, ISO 20022, switching and authorization, clearing and settlement, dispute management, data management and analytics, fraud and risk management, acceptance, electronic bill payments, testing and certification, and tokenization service. In addition, it operates Payabbhi, a digital payments platform, which spans unified payments, AP/AR automation, and banking. The company was incorporated in 1987 and is based in Kolkata, India.