Build .NET Core applications in the cloud on Linux.
Start coding free →.NET Core is an open-source, cross-platform framework from Microsoft for building web, desktop, cloud, and mobile applications. It runs on Linux, macOS, and Windows, supports C#, F#, and Visual Basic, and is optimized for cloud and server workloads. On RunCode, a .NET Core workspace starts with the .NET SDK installed so you can run dotnet new, build, and test projects in under a minute.
Open a .NET Core workspace →.NET Core is modular, so you include only the runtime components your application actually needs. It runs on Linux, macOS, and Windows from the same codebase. You can host applications in IIS, self-hosted, or in a Docker container. The framework ships libraries for data access, security, and dependency injection.