What is .NET?

NET is an open source developer platform, created by Microsoft, for building many different types of applications.

A developer platform for building all your apps.

You can write .NET apps in C#, F#, or Visual Basic. C# is a simple, modern, object-oriented, and type-safe programming language. Visual Basic is an approachable language with a simple syntax for building type-safe, object-oriented apps.

Whether you're working in C#, F#, or Visual Basic, your code will run natively on any compatible OS. Different .NET implementations handle the heavy lifting for you.

.NET Standard is a base set of APIs that are common to all .NET implementations. Each implementation can also expose additional APIs that are specific to the operating systems it runs on. For example, .NET Framework is a Windows-only.