ATOM Payments is an Indian finance and payment products company that has been in business since 2006 and ATOM payment gateway vividly has grown into a large-scale SaaS platform with thousands of businesses Atom Gateway using their payment gateway in India now. ATOM Payments is an Indian finance and payment products company that has been in business since 2006 and ATOM payment gateway vividly has grown into a large-scale SaaS platform with thousands of businesses using their payment gateway in India now.