Build. Test. Deploy.
.NET is the free, open-source, cross-platform framework for building modern apps and powerful cloud services.
Supported on Windows, Linux, and macOS
Build it with .NET
Web
Build web apps and services for macOS, Windows, Linux, and Docker.
Mobile and desktop
Use a single codebase to build native apps for Windows, macOS, iOS, and Android.
Cloud
Build scalable and resilient cloud-native apps that run on all major cloud providers.
Artificial Intelligence and ML
Build smart apps with C#, OpenAI, and Azure.
Faster response times, less compute power, better applications
The Fortunes test simulates a simple web application where HTML is rendered server-side after querying a database. See TechEmpower's Round 23 results.
Microsoft Extensions for AI
Microsoft.Extensions.AI is now available! Seamlessly integrate AI into your .NET applications using unified AI building blocks for .NET.
Learn more.NET Conf: Focus on Modernization
Missed the event? You can still learn how to modernize your .NET applications and unlock the benefits
Watch on-demand.NET 9 now available
Unlock new AI and Cloud potential with .NET 9: Faster, smarter, and built for the future.
Get .NET 9
Free and open source
.NET is developed and maintained as a free and open-source project on GitHub, the home for millions of developers who want to build great things together.
Fast and cross-platform
You can write, run, and build on multiple platforms, including Windows, Linux, and macOS.
Everything you need to start your .NET learning journey
.NET offers a library of learning resources. Access videos, tutorials, code samples, and content from Microsoft Learn to help you build better.
Explore learning portal.NET for Beginners videos
Getting started with .NET development? We have you covered with our .NET for Beginners videos. Explore videos on web, mobile, desktop, C#, machine learning, containers/Docker, data access, and more.
Browse beginner videosMicrosoft Learn
Discover your path to build apps with .NET on Microsoft Learn. Whether you're just starting or an experienced professional, Microsoft Learn's hands-on approach helps you arrive at your goals faster, with more confidence and at your own pace for free.
Get startedLinkedIn Learning
Get an introduction to the programming skills needed for a career as a .NET software developer. Experience .NET learning courses that provide a broad perspective on core technologies leveraging .NET.
Explore coursesProductive
productive platform for developers.
NuGet
Build with the most secure package ecosystem trusted by millions of developers. With over 390,000 unique packages to date and 50,000 more each year.
Browse the NuGet GalleryVisual Studio
Develop with the best IDE for .NET on Windows. Packed with an array of tools and features to elevate and enhance every stage of software development.
Meet the Visual Studio familyVisual Studio Code
Develop on Linux, macOS, or Windows to build cross-platform websites and services. Install the C# Dev Kit to get the best experience.
Download Visual Studio CodeAzure
Create modern, scalable cloud apps on a cloud platform designed for .NET.
Explore Azure resources and toolsBe a part of the global .NET developer community
Join the large, engaged community of developers around the globe who build with .NET. Share, showcase, and solve together. Stay connected.
Get connected474K+
stars on GitHub330K+
followers on X329K+
members on Meetup
Who uses .NET?
The world's top organizations are powered by .NET and trust Microsoft to make .NET the best choice in the industry for their mission critical software. Amazing developers like you use .NET to build incredible software for millions of companies around the world, in every industry.
Read customer storiesReady to get started?
Learn .NET easily with our step-by-step tutorials.
Get started