Top 10 Best Python Applications in Real-World

1. Instagram

A popular social media platform that uses Python for backend services, data processing.

2. YouTube

One of the world's largest video-sharing platforms that relies on Python for various tasks.

3. Dropbox

A popular social media platform that uses Python for backend services, data processing

4. Spotify

The music streaming giant employs Python for its data analysis, recommendation algorithms. 

5. Netflix

The leading entertainment platform employs Python for content recommendation, analytics. 

6. Reddit

A major social news aggregation platform that relies on Python for various aspects of its website. 

7. NASA

 Python is widely used at NASA for data analysis, simulation, and scientific computing in various space missions.

8. Pinterest

A visual discovery and social media platform that utilizes Python for content organization.

9. Django

A high-level Python web framework that powers many popular websites and applications. 

10. TensorFlow

An open-source machine learning library developed by Google, widely used in research.