Software Alternatives, Accelerators & Startups

ASP.NET VS FastAPI

Compare ASP.NET VS FastAPI and see what are their differences

ASP.NET logo ASP.NET

ASP.NET is a free web framework for building great Web sites and Web applications using HTML, CSS and JavaScript.

FastAPI logo FastAPI

FastAPI is an Open Source, modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints.
  • ASP.NET Landing page
    Landing page //
    2023-04-29
  • FastAPI Landing page
    Landing page //
    2023-05-14

ASP.NET features and specs

  • Performance
    ASP.NET is known for its high performance and scalability. It compiles server-side code to DLL files, which is executed on the server side, thereby speeding up the application's response time.
  • Security
    ASP.NET provides built-in security features like form authentication and Windows authentication, as well as protection against common threats such as SQL injection, cross-site scripting, and request forgery.
  • Rich Toolbox
    Visual Studio, the Integrated Development Environment (IDE) for ASP.NET, offers a rich toolbox with a plethora of controls, automatic deployment features, and other tools that significantly speed up development.
  • Cross-Platform Support
    ASP.NET Core is a cross-platform framework, which means you can run your web applications on Windows, Linux, and macOS.
  • Community and Support
    ASP.NET has a strong community and extensive documentation, making it easier to find solutions to problems and ensuring continuous improvement and support.

Possible disadvantages of ASP.NET

  • Learning Curve
    The framework can be complex for beginners, especially those without experience in C# or the .NET ecosystem.
  • Cost
    While ASP.NET Core is free and open-source, some advanced features and tools require a Visual Studio subscription, which can be expensive.
  • Hosting
    Although ASP.NET Core has improved in terms of cross-platform hosting, traditional ASP.NET applications are primarily optimized for Windows servers, limiting hosting options.
  • Resource Intensive
    ASP.NET applications can be more resource-intensive than applications built with some other frameworks, which can lead to higher infrastructure costs.
  • Complexity
    The framework offers a lot of features and functionalities, which can sometimes make it overly complex and harder to manage for smaller projects.

FastAPI features and specs

  • High Performance
    Built on Starlette and Pydantic, FastAPI is one of the fastest frameworks for Python, providing high performance due to its asynchronous request handling.
  • Automatic Interactive API Documentation
    FastAPI automatically generates interactive API documentation via Swagger UI and ReDoc, which are very helpful for development and testing.
  • Type Checking and Validation
    With Pydantic models and Python type hints, FastAPI provides automatic data validation and type checking, reducing the chance of runtime errors.
  • Ease of Use
    Its syntax and design make it easy to learn for Python developers, offering a smooth development experience while reducing boilerplate code.
  • Asynchronous Support
    FastAPI supports asynchronous programming, allowing for better performance for I/O-bound operations, making it optimal for handling many simultaneous connections.
  • Extensive Documentation
    It has comprehensive and well-structured documentation, which is very useful for both beginners and advanced users.
  • Community and Ecosystem
    FastAPI has a growing community and ecosystem, with many plugins and integrations available to extend its functionality.

Possible disadvantages of FastAPI

  • Learning Curve for Asynchronous Programming
    Although FastAPI itself is easy to learn, grasping the concepts of asynchronous programming in Python can be challenging for beginners.
  • Complex Dependencies
    Using Pydantic for advanced validation can make the request models complex, requiring a deeper understanding of Pydantic and its functionalities.
  • Early Stage Libraries
    Some third-party libraries and extensions specifically tailored for FastAPI might still be in early stages of development and lack long-term stability.
  • Limited Real-World Examples
    Although the documentation is extensive, there might be limited real-world examples and case studies readily available compared to more mature frameworks.
  • Deployment Complexity
    Deploying FastAPI applications might be more complex in comparison to traditional synchronous frameworks, mainly due to the need for asynchronous server setups.

ASP.NET videos

Build Rating and Review System in ASP.NET MVC and Entity Framework

More videos:

  • Review - ASP.NET MVC - Review 0
  • Review - IMDeanyP Movie Review Site - ASP.NET / C# / SQL Server / MVC / Entity Framework

FastAPI videos

FastAPI from the ground up

More videos:

  • Tutorial - 30 Days of Python - Day 14 - Web App with Flask, FastAPI, ngrok, and Invictify - Python TUTORIAL
  • Review - [PT] Python - API com FastAPI - Chat | twitch.tv/codeshow

Category Popularity

0-100% (relative to ASP.NET and FastAPI)
Developer Tools
56 56%
44% 44
Web Frameworks
71 71%
29% 29
Python Web Framework
77 77%
23% 23
API Tools
0 0%
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare ASP.NET and FastAPI

ASP.NET Reviews

The 20 Best Laravel Alternatives for Web Development
ASP.NET’s got that Microsoft muscle, a powerhouse of a framework for building dynamic web services and more. It lets you roll out robust websites with the smoothness that comes with deep pockets. Perfect for .NET software development teams.
Top 10 Phoenix Framework Alternatives
Moving over to the .NET platform, Asp.Net is an open-source web framework developed by Microsoft that allows developers to build dynamic web pages, apps, and services using HTML, JavaScript, and CSS.
10 Ruby on Rails Alternatives For Web Development in 2022
Last but not least, a back-end web framework created by Microsoft for the development of dynamic web pages - ASP.NET. Built on top of C# it is one the fastest frameworks available on the market. ASP.NET is capable of handling 7.01 million requests per second while Django handles only 79,266 requests. The framework is mainly used for building web applications, APIs,...

FastAPI Reviews

The 20 Best Laravel Alternatives for Web Development
FastAPI, as the name hints, is a swift mover. Built on Starlette, it’s all about speed and performance with Python. Crafting API masterpieces at the speed of light, now that’s something.
25 Python Frameworks to Master
Since its release in 2018, it has rapidly gained popularity due to its great performance and simplicity. In fact, according to PyPi Stats, FastAPI has over 9 million monthly downloads, surpassing even full-stack frameworks like Django.
Source: kinsta.com
3 Web Frameworks to Use With Python
myapp/ is the main directory of your FastAPI application. It includes all the other files and directories needed for the application.static/ is a directory used to store static assets such as CSS, JavaScript, and image files. These assets are served directly by the web server and are typically used to add visual styling and interactivity to the application.css/, img/, js/...
Best Alternatives to FastAPI App Free for Windows (2021)
FastAPI Alternative – So many alternatives app to FastAPI that you must to know out there. And, looking for an ideal software was not easy matter. Lucky you, at this page you can find the best replacement app for FastAPI. So what you are waiting for, get the latest FastAPI alternative app for Windows 10 from this page.
Top 5 Back-End Frameworks to Consider for Web Development in 2021
FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints. It is fast when compared to other major Python frameworks like Flask and Django. FastAPI gives great flexibility to fulfill businesses’ API needs in today’s evolving world.

Social recommendations and mentions

Based on our record, FastAPI seems to be a lot more popular than ASP.NET. While we know about 265 links to FastAPI, we've tracked only 21 mentions of ASP.NET. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

ASP.NET mentions (21)

  • Diversify Your Tech Stack: Uncovering Powerful Node js Alternatives
    Built by Microsoft, .NET is a high-performance application platform that uses C# for programming. .NET is cross-platform and comes with plenty of libraries and APIs covering collections, networking, and machine learning to build different types of applications. ASP.NET Core widens the .NET developer platform with libraries and tools geared towards web applications. - Source: dev.to / 5 months ago
  • C# Fundamentals
    Web Applications: ASP.NET, a powerful framework for building web applications, is primarily based on C#. Developers can create dynamic websites, web APIs, and services with ASP.NET. - Source: dev.to / 7 months ago
  • What’s New in Bold Reports 6.1 April 2024 Release
    The Bold Reporting Tools ASP.NET MVC and ASP.NET Web Forms will no longer be deployed in the embedded build. However, bug fixes are diligently transferred to our public repositories until Microsoft officially announces the end of support for these platforms. For new web application development or to stay up-to-date, Blazor or ASP.NET Core are recommended. - Source: dev.to / 8 months ago
  • Is ASP.NET Core the next step in my career being an ASP.NET MVC developer? Or are there other technologies I should look at?
    Sorry for the possibly dumb questions. But then does .NET 5 have a "Model View Controller" workflow? I'm seeing ASP.NET still exists. But it's just "ASP.NET", no "MVC" or "Core" attached to the end. And they seem to recommend Blazor instead of C# which is something I only know the name of. Source: almost 2 years ago
  • Mixing GCloud and F#
    Cloud functions run aspnet core under the hood, but since it is a controlled environment it was designed in a way that the only concern you should worry about is running your function so all of the usual boilerplate related to adding services, middleware or enabling features is hidden away from you which for most simple scenarios this is what you will need and in the case of F# where dependency injection is more... - Source: dev.to / about 2 years ago
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FastAPI mentions (265)

  • Top 20 Python API Frameworks with OpenAPI Support
    FastAPI is a modern, high-performance web framework for building APIs with Python 3.6+ based on standard Python type hints. It is designed for quick development and high efficiency. Zuplo is a proud sponsor of the FastAPI project, to help drive API development in Python. - Source: dev.to / 20 days ago
  • How to Promote and Market your API: SPECtacular OpenAPI
    For Small teams and Startups I would recommend picking an API framework that automatically generates an OpenAPI spec through your code. Be very careful in which framework you pick as many claim to have OpenAPI support, but in reality only support a few fields. Many recent frameworks are built from the ground up around OpenAPI support. My recommendations are Huma for Go, Tsoa for Typescript, and FastAPI for Python.... - Source: dev.to / 20 days ago
  • How to Build your very own Google's NotebookLM
    FastAPI serves as our backend framework, chosen for several compelling reasons:. - Source: dev.to / about 1 month ago
  • Pydantic: The end of manual validations! ✨
    One of the most prominent use cases of Pydantic is in FastAPI, a modern web framework for building APIs with Python. FastAPI uses Pydantic models extensively for request body validation, query parameters, and response schemas. - Source: dev.to / about 2 months ago
  • Writing Integration And Unit Tests for a Simple Fast API application using Pytest
    Python is a great language for building various types of applications, especially in today's landscape where machine learning and AI are rapidly advancing. With this growth in services, there’s a strong need for well-designed, maintainable, and scalable APIs. That’s where FastAPI comes in, a powerful async web API framework for Python that's both simple and robust https://fastapi.tiangolo.com/. - Source: dev.to / about 2 months ago
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What are some alternatives?

When comparing ASP.NET and FastAPI, you can also consider the following products

Ruby on Rails - Ruby on Rails is an open source full-stack web application framework for the Ruby programming...

Django - The Web framework for perfectionists with deadlines

Flask - a microframework for Python based on Werkzeug, Jinja 2 and good intentions.

Laravel - A PHP Framework For Web Artisans

ExpressJS - Sinatra inspired web development framework for node.js -- insanely fast, flexible, and simple

Node.js - Node.js is a platform built on Chrome's JavaScript runtime for easily building fast, scalable network applications