FreeHand is probably the most high profile, if not well known nowadays, since it led to a lawsuit brought by pissed off ex-FreeHand customers (which ultimately

FreeHand is probably the most high profile, if not well known nowadays, since it led to a lawsuit brought by pissed off ex-FreeHand customers (which ultimately ended in a shitty settlement). There's also a full list of their acquisitions here, which might be fun to scroll through: https://en.wikipedia.org/wiki/List_of_acquisitions_by_Adobe https://en.wikipedia.org/wiki/List_of_acquisitions_by_Adobe