I would go with Pharo if you are interested in what the Smalltalk that is referenced in the article was like. Pharo has a modern and friendly look, it's also pr

I would go with Pharo if you are interested in what the Smalltalk that is referenced in the article was like. Pharo has a modern and friendly look, it's also providing the GUI environment and integrated tools that (in my opinion) seem in line with the original goals of the Smalltalk project. If your interest is more in Smalltalk the language, I think that using GNU Smalltalk in the terminal is certainly reasonable.