On December 7, 1989, at the American Academy of Arts and Sciences in Cambridge, Massachusetts USA, Lotus Notes 1.0 was officially unveiled. I wasn't there, and the date wasn't significant to me other than as I was approaching final exams in my penultimate semester of college. Clearly, though, that event changed history -- and produced one of the most successful and longest-running software products in distributed computing...

Source: http://www.edbrill.com/ebrill/edbrill.nsf/dx/20-years-ago-today...notes-1.0?opendocument&comments