BETA (programming language)

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BETA is a pure object-oriented language originating within the "Scandinavian School" in object-orientation where the first object-oriented language Simula was developed.^[1] Among its notable features, it introduced nested classes, and unified classes with procedures into so called patterns.

It has been in development since 1976, with implementations known since 1986, by Kristen Nygaard together with Bent Bruun Kristensen, Ole Lehrmann Madsen, and Birger Møller-Pedersen, at the University of Oslo.

The project is inactive as of October 2020.^[2]