Node.js, React, jQuery, Express, Angular, Next.js, ASP.NET Core, Vue.js, WordPress, Flask, Django, Laravel, Ruby on Rails.

Choose the framework based on your project needs. For example, React can be used for dynamic UIs, Node.js can be used for scalable backend services, and WordPress can be used for CMS development services.

Consider factors like project requirements, team expertise, and community support. For custom website design and development, analyse whether you need a front-end, back-end, or full-stack solution.

Yes, keep an eye on emerging frameworks that offer better performance, easier integration with website optimization services, and advanced features for custom web development.

WordPress itself is the go-to framework for WordPress website development, offering extensive plugins and themes for customisation.