Also of note, Ray Ozzie, who was best known for creating Lotus Notes (later causing IBM to purchase Lotus), also worked on PLATO [1] while an undergrad at U of

Also of note, Ray Ozzie, who was best known for creating Lotus Notes (later causing IBM to purchase Lotus), also worked on PLATO [1] while an undergrad at U of Illinois at Urbana-Champaign, and Lotus Notes was based in part on his experiences using the PLATO Notes group messaging system [1] https://en.wikipedia.org/wiki/Ray_Ozzie https://en.wikipedia.org/wiki/Ray_Ozzie