React.js is a popular and highly demanded open-source JavaScript library, designed to develop the user interfaces.

Next.js is a flexible React framework that gives you building blocks to create fast, full-stack web applications.

Ruby is a dynamic, open source programming language with a focus on simplicity and productivity. It has an elegant syntax that is natural to read and easy to write.

.NET is a free and open-source application platform supported by Microsoft.

Vue.js is a progressive open-source JavaScript framework for building user interfaces.

React Native is Facebook's open-source framework for cross-platform mobile app development using JavaScript and React, ensuring native-like performance.