Python - Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.
HTML5 - 5th major revision of the core language of the World Wide Web
Java - A concurrent, class-based, object-oriented, language specifically designed to have as few implementation dependencies as possible
Blazor - An experimental web UI framework using C#/Razor and HTML, running in the browser via WebAssembly
Rust - A safe, concurrent, practical language
Angular.io - Angular is a JavaScript web framework for creating single-page web applications. The code is free to use and available as open source. It is further maintained and heavily used by Google and by lots of other developers around the world.