Happy 55th birthday mainframe In 2000 IBM said it would support Linux on the mainframe, and, by 2009, 70 of IBM’s top 100 mainframe customers were estimated to be running Linux. You can also see : Happy 21st Birthday, Debian! "Happy Birthday To You" Set To Finally Reach the Public Domain Ubuntu’s Unity Turns 4, Happy Birthday! Happy 20th Birthday, KDE Happy 60th birthday, Fortran Happy 24th Birthday, Debian! Happy birthday Chrome, a New Elementary & More… Happy Birthday OpenStack! How did you grow up so fast? Happy birthday, KDE: 11 applications you never knew existed 2019-04-15 editor Share !