Smalltalk
Programming language
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Smalltalk is a purely object oriented programming language that was originally created in the 1970s for educational use, specifically for constructionist learning, but later found use in business. Wikipedia
Designed by: Alan Kay, Dan Ingalls, and Adele Goldberg
First appeared: 1972; 52 years ago (development begun 1969)
Implementation language: Smalltalk
OS: Cross-platform (multi-platform)
Platform: Xerox Alto (74181)
Scope: Lexical (static)
Stable release: Smalltalk-80 version 2 / 1980; 44 years ago