Languages & runtimes

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Aspire works well with distributed apps that span more than one service, tool, or runtime. You can choose the AppHost style that fits your repo, then bring in the languages and frameworks your app already uses.

What this means in practice

Write the AppHost in C# or TypeScript today.
Orchestrate services and tools written in C#, JavaScript, Python, Go, Java, Rust, PowerShell, and more.
Start with the Aspire Dashboard if observability is your first step.
Adopt Aspire without rewriting your existing app around a single language.

Two choices to know

When people ask whether Aspire supports a language, they usually mean one of these two things:

AppHost language: the language you use to define how your distributed app is wired together.
App language or runtime: the language and runtime used by the services, frontends, workers, scripts, and tools inside that app.

For example, you might use a TypeScript AppHost to coordinate a Python worker, a Node.js frontend, and a C# API in the same application model.

AppHost languages

Both AppHost styles use the same Aspire model. The main difference is how the orchestration is authored and how it fits into your existing workflow.

AppHost language	Good fit for	Start here	Support
C#	Teams already using .NET tooling or who want a single-file AppHost	What is the AppHost?	Official
TypeScript	Teams working in Node.js or TypeScript workspaces	TypeScript AppHost project structure	Official

Guides for app languages and runtimes

Aspire can coordinate apps written in multiple languages. Some guides are best described by language (for example, C# or Python), while others cover a broader runtime or ecosystem (for example, .NET or Node.js).

The sections below use the labels that are most helpful when you’re trying to answer one practical question: “How do I use Aspire with the stack I already have?”

Official guides

C# and .NET apps

Use Aspire with C# projects, file-based apps, and other .NET workloads.

Start with C# file-based apps or Project resources. To add a C# project or file-based app by path without referencing it from the AppHost’s solution, use the .NET / C# integration.

JavaScript and Node.js apps

Use Aspire with JavaScript apps, Node.js services, and frontend workflows such as Vite.

Start with JavaScript integration and Standalone Aspire dashboard for Node.js.

Python apps

Use Aspire with Python services and OpenTelemetry-enabled Python apps.

Start with Python integration and Standalone Aspire dashboard for Python.

Go apps

Use Aspire with Go services and the local Go toolchain.

Start with Go integration.

Community Toolkit guides

Java apps

Add Java services through the Community Toolkit.

Start with Java integration.

Rust apps

Add Rust services through the Community Toolkit.

Start with Rust integration.

PowerShell scripts and tools

Add PowerShell-based scripts and developer tools through the Community Toolkit.

Start with PowerShell integration.

Dashboard guides for existing apps

If you want to start with observability before adopting a full AppHost, use a standalone dashboard guide: