ASP.NET Core

Build web apps and APIs with C# and .NET

Meet ASP.NET Core

ASP.NET Core is a free, open-source framework for building web applications and services with C# and .NET. Developers use it to create browser interfaces, REST APIs, and backends for mobile or desktop clients. It runs on Windows, Linux, and macOS, with deployment options that include cloud platforms, private servers, and containers.

The framework brings together routing, authentication, configuration, logging, and dependency injection, so teams can organize application code around a shared foundation. Blazor supports interactive web interfaces written in C#, while SignalR adds live updates and two-way communication between clients and servers. Developers can start from a project template, build and test locally with familiar .NET tools, and expand a small endpoint into a larger application as requirements grow.

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Product details

Website: dotnet.microsoft.com
Status: Launched
Category: Developer tools
Listed: Oct 18, 2026

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