10 free websites that can be extremely helpful for web developers

1. Stack Overflow - A Q&A platform for programmers to ask and answer questions on various programming topics.
   Stack Overflow

2. MDN Web Docs - Provides detailed documentation and tutorials on web development technologies like HTML, CSS, and JavaScript.
   MDN Web Docs

3. GitHub - A platform for version control and collaborative coding. It hosts a plethora of open-source projects and code repositories where developers can learn from others' code.
   GitHub

4. W3Schools - Offers tutorials and references on web development languages such as HTML, CSS, JavaScript, and many more.
   W3Schools

5. CSS-Tricks - Provides articles, tutorials, and resources on CSS, front-end development, and related topics.
   CSS-Tricks

6. freeCodeCamp - Offers interactive coding challenges, tutorials, and certifications in web development and other programming topics.
   freeCodeCamp

7. Codecademy - An interactive platform offering coding exercises and projects to learn various programming languages, including web development technologies.
   Codecademy

8. Mozilla Developer Network (MDN) Web Docs - Offers comprehensive documentation and guides on web technologies including HTML, CSS, and JavaScript.
   MDN Web Docs

9. DevDocs - Aggregates documentation for many programming languages and libraries into a single, easily searchable interface.
   DevDocs

10. Can I Use - A tool for checking browser support for various HTML, CSS, and JavaScript features.
    Can I Use