FLEX machine, 1968 Smalltalks, 1971–1979 NoteTaker, 1978 Vivarium, 1986–1993 Playground, 1988–1992 Squeak, 1996- Etoys, 1997-…

2019-03-03 IFTTT, Twitter, worrydream

FLEX machine, 1968
Smalltalks, 1971-1979
NoteTaker, 1978
Vivarium, 1986-1993
Playground, 1988-1992
Squeak, 1996-
Etoys, 1997-
Croquet, 2003-2007
STEPS, 2006-2012
CDG/HARC, 2013-2017
Tutor, 2016-
— Bret Victor (@worrydream) March 2, 2019

(via http://twitter.com/worrydream/status/1101930035643076610)