Top 10 programming languages in the world.

The top 10 programming languages as of 2021, based on popularity and usage, are:

1. Python: a versatile, high-level language used for a wide range of applications, including data analysis, machine learning, web development, and more.

2. Java: a popular language used for developing Android apps, enterprise applications, and web applications.

3. JavaScript: a scripting language used for building dynamic websites and web applications, as well as desktop and mobile applications.

4. C#: a language designed for Microsoft's .NET framework, used for developing Windows applications, games, and enterprise applications.

5. C++: a high-performance language used for developing operating systems, device drivers, and high-performance applications.

6. TypeScript: a superset of JavaScript, providing additional features and static typing to improve code maintainability and scalability.

7. Kotlin: a modern language used for developing Android apps, web applications, and server-side applications.

8. PHP: a server-side language used for developing dynamic web applications and content management systems.

9. Go: a language designed for concurrency and scalability, used for developing network and web applications, as well as command-line utilities.

10. Swift: a language designed by Apple for developing iOS, macOS, watchOS, and tvOS applications.