Smalltalk is described as 'Object-oriented programming (OOP) language. It is objects all the way down. Smalltalk’s purity and clarity in this regard made it the archetype for nearly all other OOP languages' and is a programming language in the development category. There are more than 50 alternatives to Smalltalk for a variety of platforms, including Windows, Linux, Mac, BSD and Web-based apps. The best Smalltalk alternative is Python, which is both free and Open Source. Other great apps like Smalltalk are Java, C (programming language), C++ and Rust.