PyScript lets you run Python scripts right in the browser, side by side with JavaScript, with two-way interaction between your code and the web page. Created by Anaconda and launched in April 2022 ...

Node.js uses Google's V8 JavaScript engine from Chrome to run and execute JavaScript code outside the browser. SEE: Hiring Kit: Python developer (TechRepublic Premium) ...

How to Execute a Servlet in Netbeans. Netbeans gives programmers and Web designers the ability to create Java and JSP servlets, which run customized code in a user's browser.

However, although these in-app browsers are based on Safari’s WebKit on iOS, developers can modify them to run their own JavaScript code.