R S Software (India) Limited provides software solutions to electronic payment industries in India, the United States, and Japan. It engages in the development, testing, and maintenance of software products. The company's products include RS RTPS, RS DigitalEdge, RS RealEdge, RS BillAbhi-Central, RS BillAbhi-Bank, RS IntelliEdge – Central, RS IntelliEdge – Banks, RS iFinSwitch, RS MerchantEdge, and RS Test2Pay 3DS2.0. 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 services. The company's solutions cover digital payments, data analytics, emerging payments, merchant acquiring, security and compliance, QA and testing, payment processing, and platform architecture solutions, as well as Payabbhi, a digital payments platform. It serves payment networks, payment processors, banks, merchants, national payments infrastructure, and payment service providers. The company was incorporated in 1987 and is based in Kolkata, India.