As programming and development technologies continue to advance, the quality and quantity of online resources are also improving. Whether you are an experienced developer or a beginner just starting out, these websites can provide you with tremendous help. Here are some excellent resources I found on Twitter, along with detailed introductions of their functions and uses.

1. W3Schools

W3Schools is a comprehensive resource for learning web technologies, covering HTML, CSS, JavaScript, and more. It offers rich tutorials and examples, making it very suitable for beginners to get started.

2. CheatSheets

cheatsheets.zip provides cheat sheets and quick reference materials contributed by the open-source community. Whether you need to look up shortcuts and syntax for any programming language or tool, you can find it here.

3. CodePen

CodePen is an online code editor and community specifically for testing and showcasing HTML, CSS, and JavaScript code snippets. It's particularly useful for quickly sharing and displaying your front-end projects, and you can draw inspiration from other developers' works.

4. JSFiddle

JSFiddle is another online IDE mainly used for testing JavaScript, HTML, and CSS code snippets. It offers a clean interface that allows you to easily create and share code experiments.

5. StackBlitz

StackBlitz is a modern web application online IDE, particularly suitable for projects using frameworks like Angular, React, and Vue. It can quickly set up a development environment and offers real-time preview functionality.

6. DevDocs

DevDocs is a fast, offline-capable documentation browser that covers a wide range of programming languages and tools. No matter what technical documentation you need to look up, DevDocs can quickly find and display it for you.

7. Postman

Postman is a powerful API testing tool with a user-friendly interface. Whether you are making simple API requests or building complex API testing workflows, Postman can meet your needs.

8. Codewars

Codewars is a platform for improving coding skills by solving programming challenges. It offers a variety of programming problems of varying difficulty, allowing you to constantly challenge and improve yourself.

9. Exercism

Exercism provides exercises and solutions for over 70 programming languages. By completing these exercises, you can gradually improve your programming skills and receive feedback from mentors.

10. Uiverse

Uiverse is an open-source library of UI elements suitable for any project. The elements here are contributed by the community, and you can use them directly or modify them as needed.

11. Readme.so

Readme.so is a simple and easy-to-use README generator. Using its Markdown editor and templates, you can easily create README files for your projects.

12. Resumake.io

Resumake.io is a professional resume generator that allows you to easily create resumes with a professional look. Just fill in the relevant information, choose a template, and your resume will be generated.

These tools and resources have greatly helped me on my programming journey, and I believe they will benefit you as well. I hope everyone can make full use of these resources to continuously improve their programming skills.