We agree on Algol, Lisp, Forth, APL, and Prolog. For ground-breaking functional language, I have SASL (St Andrews Static Language), which (just) predates ML, and for object oriented language, I have Smalltalk (which predates Self).

I also include Fortran, COBOL, SNOBOL (string processing), and Prograph (visual dataflow), which were similarly ground-breaking in different ways.

f1shy 43 minutes ago | parent [-]

I don’t understand why self is placed in the list instead of smalltalk. Smalltalk came first, and Alan Key was the one who invented the “OOP” name.

Also ML is seen as a child of Lisp.

	▲	pjmlp 16 minutes ago \| parent [-]
		They should be placed alongside each other, because Self OOP model is quite different from Smalltalk, including how the graphical programming experience feels like. For those that never seen it, there are some old videos (taken from VHS) on the language site, https://selflanguage.org/