I think for many unknown, but they serve majority of global banks...
Canadian financial technology firm D+H (DH.TO) said on Monday it agreed to acquire global payment services provider Fundtech for $1.25 billion in cash, in a bid to expand its service offerings aimed at global financial institutions and large U.S. banks. New York-based Fundtech, with some 1,500 employees and 19 offices globally, provides a comprehensive line of transaction banking software that facilitates global and domestic payments, along with financial messaging, corporate cash management and merchant services. The deal comes nearly two years after it acquired U.S. rival Harland Financial Solutions for about $1.2 billion in cash from Harland Clarke Holdings Corp [MFWH.UL]. That deal was aimed at broadening D+H's offerings for online and mobile banking, branch automation and commercial lending, primarily around community banks and credit unions.
http://www.reuters.com/article/2015/03/30/us-fundtech-m-a-dh-idUSKBN0MQ25720150330