
Express.js is a simple Node.js framework for single, multi-page, and hybrid web applications.
Bootstrap is the most popular CSS Framework for developing responsive and mobile-first websites.
Gulp.js is an old but popular site building tool that automates various repetitive development tasks in web development, such as compiling Sass, minifying JavaScript, and optimizing images.
Pug is a high-performance template engine for Node.js and browsers that enables developers to write HTML templates using a concise and intuitive syntax. It supports a range of features, including template inheritance, conditionals, loops, mixins, and more, and can be easily integrated into a variety of web frameworks and build tools.