Opal is a programming language created by Phillip Taylor in 2006. It is designed to be a general-purpose, object-oriented language with a focus on simplicity, expressiveness, and portability. Opal is influenced by languages such as Smalltalk, Ruby, and Io.
Opal is a dynamic language with a flexible type system. It supports multiple dispatch, mixins, and duck typing. Opal also has a rich standard library and a growing community of users and developers.
Opal is released under the MIT License, and it is available for use on Windows, macOS, and Linux.