Wasmtime 34.0.2

.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher. .NET Standard 2.0 This package targets .NET Standard 2.0. The package is compatible with this framework or higher. 
dotnet add package Wasmtime --version 34.0.2
                    


                    

                
NuGet\Install-Package Wasmtime -Version 34.0.2
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Wasmtime" Version="34.0.2" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Wasmtime" Version="34.0.2" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Wasmtime" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add Wasmtime --version 34.0.2
                    


                    

                
#r "nuget: Wasmtime, 34.0.2"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package Wasmtime@34.0.2
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=Wasmtime&version=34.0.2
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Wasmtime&version=34.0.2
                    


                            Install as a Cake Tool

Installation

You can add a package reference with the .NET SDK:

$ dotnet add package wasmtime

Introduction

For this introduction, we'll be using a simple WebAssembly module that imports a hello function and exports a run function:

(module
  (func $hello (import "" "hello"))
  (func (export "run") (call $hello))
)

To use this module from .NET, create a new console project:

$ mkdir wasmintro
$ cd wasmintro
$ dotnet new console

Next, add a reference to the Wasmtime package:

$ dotnet add package wasmtime

Replace the contents of Program.cs with the following code:

using System;
using Wasmtime;

using var engine = new Engine();

using var module = Module.FromText(
    engine,
    "hello",
    "(module (func $hello (import \"\" \"hello\")) (func (export \"run\") (call $hello)))"
);

using var linker = new Linker(engine);
using var store = new Store(engine);

linker.Define(
    "",
    "hello",
    Function.FromCallback(store, () => Console.WriteLine("Hello from C#!"))
);

var instance = linker.Instantiate(store, module);
var run = instance.GetAction("run")!;
run();

An Engine is created and then a WebAssembly module is loaded from a string in WebAssembly text format.

A Linker defines a function called hello that simply prints a hello message.

The module is instantiated and the instance's run export is invoked.

To run the application, simply use dotnet:

$ dotnet run

This should print Hello from C#!.

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 is compatible.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 was computed.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 is compatible. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

  • .NETStandard 2.0

  • .NETStandard 2.1

    • No dependencies.

  • net8.0

    • No dependencies.

  • net9.0

    • No dependencies.

NuGet packages (14)

Showing the top 5 NuGet packages that depend on Wasmtime:

Package Downloads
DevCycle.SDK.Server.Local

.NET Server Local Bucketing SDK for DevCycle
Opa.Wasm

Call Open Policy Agent (OPA) policies in WASM (Web Assembly) from .NET
OpaDotNet.Wasm

Open Policy Agent (OPA) WebAssembly dotnet core SDK
DOPA

A .NET API for evaluating OPA policies compiled as WebAssembly modules.
Deislabs.WAGI

Provides a configuration driven method to add WAGI modules as route endpoints to ASP.Net Core applications using WAGI.WARNING: WAGI is experimental. It is not considered production-grade by its developers, neither is it "supported" software..

GitHub repositories (5)

Showing the top 5 popular GitHub repositories that depend on Wasmtime:

Repository Stars
PixiEditor/PixiEditor
PixiEditor is a Universal Editor for all your 2D needs
6over3/bebop
🎷No ceremony, just code. Blazing fast, typesafe binary serialization.
SteveSandersonMS/DotNetIsolator
A library for running isolated .NET runtimes inside .NET
JasonBock/Rocks
A mocking library based on the Compiler APIs (Roslyn + Mocks)
bytecodealliance/wasmtime-demos
Historical and dated demos for Wasmtime usage and WASI content
Version Downloads Last Updated
34.0.2 13,452 8/5/2025
22.0.0 124,314 7/9/2024
21.0.1 738 6/29/2024
20.0.2 332 6/28/2024
19.0.1 17,854 4/7/2024
19.0.0 11,398 3/27/2024
18.0.0 324 3/27/2024
17.0.0 29,256 1/26/2024
16.0.0 7,129 1/2/2024
15.0.0 1,661 11/21/2023
14.0.0 66,875 10/24/2023
13.0.0 2,154 9/22/2023
12.0.2 374 9/21/2023
12.0.1 353 9/21/2023
12.0.0 3,010 8/21/2023
11.0.2 363 9/22/2023
11.0.1 321,672 7/27/2023
11.0.0 417 7/27/2023
10.0.2 317 9/22/2023
10.0.1 354 9/22/2023
10.0.0 1,321 7/5/2023
9.0.3 929 6/2/2023
9.0.2 2,321 5/30/2023
9.0.1 30,015 5/22/2023
9.0.0 430 5/22/2023
8.0.1 4,611 4/27/2023
8.0.0 1,077 4/21/2023
7.0.1 488 4/27/2023
7.0.0 1,186 4/1/2023
6.0.2 507 4/27/2023
6.0.1 2,047 3/8/2023
6.0.0 1,107 2/27/2023
5.0.1 802 3/8/2023
5.0.0 67,553 1/25/2023
4.0.1 592 3/8/2023
4.0.0 697 1/25/2023
3.0.0 47,044 12/8/2022
2.0.2 1,151 11/10/2022
2.0.1 850 11/9/2022
2.0.0 641 11/9/2022
1.0.2 719 11/11/2022
1.0.1 657 11/9/2022
1.0.0 2,471 9/26/2022
0.40.0-preview1 2,938 8/29/2022
0.39.1-preview2 3,094 8/11/2022
0.39.1-preview1 394 8/10/2022
0.39.0-preview1 379 8/10/2022
0.38.1-preview1 2,029 6/29/2022
0.38.0-preview1 400 6/29/2022
0.37.0-preview1 1,075 6/14/2022
0.36.0-preview1 1,201 4/26/2022
0.35.2-preview1 1,951 4/5/2022
0.35.1-preview1 404 4/5/2022
0.35.0-preview1 719 3/9/2022
0.34.0-preview1 20,216 2/11/2022
0.33.0-preview2 18,281 1/25/2022
0.33.0-preview1 864 1/7/2022
0.32.1-preview1 423 1/7/2022
0.32.0-preview1 746 12/18/2021
0.31.0-preview1 8,069 11/1/2021
0.30.0-preview1 7,262 9/17/2021
0.29.0-preview1 1,027 8/6/2021
0.28.0-preview1 52,563 6/15/2021
0.27.0-preview1 1,348 5/22/2021
0.26.1-preview1 458 5/21/2021
0.26.0-preview1 980 4/20/2021
0.25.0-preview1 1,447 3/18/2021
0.24.0-preview1 557 3/18/2021
0.23.0-preview1 746 2/19/2021
0.22.1-preview1 2,570 1/19/2021
0.22.0-preview1 639 1/19/2021
0.21.0-preview1 824 1/14/2021
0.20.0-preview1 1,764 11/2/2020
0.19.0-preview1 1,981 7/24/2020
0.18.1-preview1 1,176 7/1/2020
0.18.0-preview1 815 6/30/2020
0.15.0-preview1 1,289 4/6/2020
0.12.0-preview1 1,135 2/26/2020
0.8.0-preview2 934 12/5/2019
0.8.0-preview1 750 11/23/2019
0.0.1-alpha1 761 10/2/2019

Update Wasmtime to 34.0.2.