It's not exactly retro either. I have a friend that works at an absurdly large financial institution...all of their credit card transactions clear through iseri

It's not exactly retro either. I have a friend that works at an absurdly large financial institution...all of their credit card transactions clear through iseries/os400/?they_call_it... EDIT: One thing that I love is the fact that they distributed apps in intermediate form and then compiled at installation time. (Sounds familiar, right?)