Swift

vs

Rebol

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. 

..

JavaScript is a scripting or programming language that conforms to the ECMAScript specification. The language is mainly used to create complex features for web pages, but is also used other software project. Javascript has curly-bracket syntax, dynamic typing, prototype-based object-orientation, and first-class functions and is mostly just-in-time compiled.

TypeScript is a free and open-source programming language created by Microsoft. The language is a strict syntactical superset of JavaScript and redefines the way developer writes JavaScript-based web applications and software by adding optional static typing in the mix. TypeScript is designed specifically for development of large-scale applications with a need to transcompile into JavaScript.

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.