Certainly, here are 18 popular programming and web development blogs that were well-regarded in 2021:

1. Smashing Magazine: A comprehensive resource for web designers and developers, offering articles, tutorials, and insights on design and development.

2. CSS-Tricks: Chris Coyier’s blog focusing on all things CSS, web design, and front-end development.

3. A List Apart: An online magazine that explores web design, development, and content strategy.

4. SitePoint: Offers a range of tutorials, articles, and guides on web development, design, and business.

5. David Walsh Blog: David Walsh’s blog covers various web development topics, including JavaScript, CSS, and general programming advice.

6. Tuts+: A platform by Envato offering tutorials and courses on a wide range of design and development topics.

7. Codrops: A resource for web developers and designers with a focus on cutting-edge techniques and creative ideas.

8. CSS Wizardry: Harry Roberts’ blog provides insights into scalable and maintainable CSS architecture.

9. Overreacted: Dan Abramov’s blog focused on React development and related topics.

10. Hacker Noon: A publishing platform for tech professionals, featuring articles on development, programming, and technology trends.

11. DEV Community: A platform where developers share articles, tutorials, and discussions on various programming topics.

12. Scotch.io: Offers tutorials and articles on web development, including topics like JavaScript, Node.js, and frameworks.

13. Mozilla Hacks: The official blog of Mozilla, focusing on open web technologies and development.

14. The GitHub Blog: GitHub’s official blog covers a wide range of topics related to development, collaboration, and open-source projects.

15. FreeCodeCamp: An open-source community that offers a vast amount of tutorials and resources on web development and programming.

16. Echo JS: A community-driven news website that aggregates and curates JavaScript-related content.

17. The Daily WTF: Provides humorous and educational stories about coding and development gone awry.

18. Stack Overflow Blog: Offers insights into programming trends, community discussions, and developer stories.

Please note that the popularity and relevance of blogs can change over time. While these blogs were notable in 2021, it’s a good idea to explore recent sources to find the best programming and web development blogs for the current year.