Oracle Financial Services Software Limited (formerly called i-flex Solutions Limited ) is an IT solution provider to the banking industry. Oracle Financial Services is majority owned by Oracle Corporation

Oracle Corporation

Oracle Corporation is an American multinational computer technology corporation that specializes in developing and marketing hardware systems and enterprise software products – particularly database management systems...

. It claims to have more than 900 customers in over 135 countries.
Oracle Financial Software Limited in Citicorp (now Citigroup

Citigroup

Citigroup Inc. or Citi is an American multinational financial services corporation headquartered in Manhattan, New York City, New York, United States. Citigroup was formed from one of the world's largest mergers in history by combining the banking giant Citicorp and financial conglomerate...

), wholly owned subsidiary called Citicorp Overseas Software Ltd.