Here are 15 free websites where you can find HTML/CSS/Javascript code snippets:

1. ChatGPT - A website that provides code snippets for various programming languages.
2. Codepen.io - A social development environment for front-end designers and developers.
3. Css-tricks.com/snippets/ - A website that provides CSS code snippets and tutorials.
4. Jsfiddle.net - An online code editor and collaboration tool for HTML, CSS, and JavaScript.
5. 30secondsofcode.org - A curated collection of useful JavaScript code snippets.
6. Bootsnipp.com - A collection of Bootstrap code snippets and templates.
7. Codepad.co - An online code editor and sharing platform.
8. Codesandbox.io - An online code editor with a vast collection of code examples and templates.
9. Codeply.com - A responsive design playground with code snippets.
10. Codemyui.com - A website that provides UI design and code snippets.
11. Jsbin.com - An online code editor and collaboration platform for web development.
12. Littlesnippets.net - A website that offers small and helpful code snippets.
13. Snipplr.com - A community-driven code snippet repository.
14. Snipt.dev - A platform where users can share and discover code snippets.
15. Webcode.tools - A collection of web development tools and code snippets.

These websites offer a wide range of code snippets to help you in your web development projects.