Swift

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Crystal

A general purpose, object-oriented programming language that adds Smalltalk-style messaging to the C programming language. Objective-C was specifically designed for the Apple ecosystem and their respective application programming interfaces, Cocoa and Cocoa Touch for building applications for macOS and iOS. Since 2014 the Apple ecosystem rely on their new programming language Swift.

At Google I/O 2017, Kotlin was announced as to official development and programming language for Android. As it became the third language to be fully supported by the platform with Java and C++. However, Kotlin can also be used cross-paltform for native, server-side and web development as well as for data science projects. The language is statically typed and general-purpose, and is designed from the bottom up to increase developer happiness. 

Raku is a programming language that intends to carry forward the ideals of the Perl community. The project was formerly known as Perl 6 and was renamed to Raku as of October 2019. Raku introduces many modern concepts to the historical language while keeping Perl compatibility mode as a part of the specification. Raku is developed by an enthusiastic community of volunteers, that strive to push the language forward.

An object-oriented, high-level, general-purpose programming language with an easy-to-learn syntax. Python was first released in 1991 by Guido van Rossum with a design philosophy that emphasises code readability. Today Python is one of the most widely used programming languages where it is used in everything from data science, machine learning and AI to modern web, mobile and desktop applications.

Ruby is a free and open-source interpreted, high-level, general-purpose programming language. The language was created by Yukihiro "Matz" Matsumoto from Japan in the mid-1990s. Today, Ruby has a friendly and growing community from all over the world and is openly developed and maintained. According to its creator Yukihiro, the language share many similarities with Perl, Smalltalk, Eiffel, Ada, Basic, and Lisp, all of which Ruby was influenced by.

ClojureScript is a compiler for Clojure that targets JavaScript. It emits JavaScript code which is compatible with the advanced compilation mode of the Google Closure optimizing compiler. With ClojureScript, you write browser and web-based applications using Clojure and the REPL, allowing you to write the same Lisp syntax that you are used to in the Clojure ecosystem.