ING has always been a pretty open/modern/progressive business on a number of fronts. I wouldn't take this as typical. (In other words - they aren't Chase and vice-versa, not anything against Chase in this claim)
I was actually really heartbroken the day Capital One bought ING Direct -- I loved that account
That might be what their American retail banking branch wants you to think, but here in NL where they're headquartered, they're Chase.
It certainly wasn't modern enough to institutionally facilitate releasing open source software though, si it's great that they made progress on that front.