🆚 ASP.NET vs. Flask

Compare technologies based on real-world usage data *

📈 ASP.NET is much more popular than Flask.
🌎 ASP.NET is more popular in the United States, China, and the United Kingdom.
🌍 Flask is more popular in Madagascar.

Type

Backend framework

Backend framework

About

Microsoft ASP.NET is a server-side web application framework that runs on the .NET platform and enables developers to build dynamic websites and APIs using languages like C#.

It offers Web Forms, MVC, Web Pages, Web API, and SignalR for real-time communication, includes tools for authentication, state management, and supports the Razor template syntax for combining HTML and server-side code.

Flask is a lightweight framework for building web applications in Python.

It provides a minimal core that includes URL routing, request/response handling, a built-in development server and debugger, Jinja2 as templating engine, support for RESTful APIs, and the ability to extend functionality via numerous third-party libraries.

Headquarters

Redmond, Washington, United States

Wilmington, Delaware, United States

Website

flask.palletsprojects.com

Pricing

Free ✔️Open source

Free ✔️Open source

Categories

Backend Frameworks › Rank #1

Backend Frameworks › Rank #28

Popularity

Determined by the number of sites using each technology.

The ASP.NET backend framework is 190 times more popular than Flask.

Total websites

Market share

Backend Frameworks

Popularity by country

Determined by the number of sites detected from each country.

ASP.NET is more popular in the United States, China, and the United Kingdom, while Flask is more popular in Madagascar.

United States

China

United Kingdom

Italy

Turkey

India

Netherlands

Canada

Australia

Germany

Awards

🥇 Most popular in the United States in the Backend Frameworks category.
🥇 Most popular in China in the Backend Frameworks category.
🥇 Most popular in the United Kingdom in the Backend Frameworks category.
🥇 Most popular in Italy in the Backend Frameworks category.
🥇 Most popular in Turkey in the Backend Frameworks category.

⭐ 10th most popular in Norway in the Backend Frameworks category.
🔥 18th most popular in the Netherlands in the Backend Frameworks category.
🔥 19th most popular in Spain in the Backend Frameworks category.
⬆️ 23rd most popular in France in the Backend Frameworks category.
⬆️ 24th most popular in Germany in the Backend Frameworks category.

Popularity by domain category

Determined by the number of sites in each category.

ASP.NET is more popular than Flask in all market segments.

Business

Marketing/Merchandising

Education/Reference

Online Shopping

Sports

Health

Travel

Internet Services

Finance/Banking

Software/Hardware

Top sites

Top-ranked sites that use these technologies.

Name

Rank

#3

#74

#88

#227

#261

Name

Rank

#15

#883

#2,397

spankbang.party

#4,318

#14,893

Compare alternatives

Technologies with similar characteristics.

See also

* According to recent studies, many of online reviews are fake.
When making your decision, it is better to rely on data that cannot be falsified.
Our service evaluates the popularity of technologies by the number of websites using them.

Statistics were last calculated on March 21, 2026.
For details, see our methodology and disclaimer.