Developed by: Xerox PARC - Learning Research Group (LRG) - Adele Goldberg, Dan Ingalls & Alan Kay
Launched: 1980

Smalltalk is a purely object oriented programming language (OOP) that was originally created in the 1970s for educational use.
Smalltalk is a pure object-oriented language, meaning that everything in Smalltalk programming is an object, including numbers, characters, and even classes themselves. Objects communicate with each other by sending messages, which triggers the execution of methods associated with the receiving object.