Microsoft.VisualStudio.Composition 16.9.20 Prefix Reserved

Install-Package Microsoft.VisualStudio.Composition -Version 16.9.20
dotnet add package Microsoft.VisualStudio.Composition --version 16.9.20
<PackageReference Include="Microsoft.VisualStudio.Composition" Version="16.9.20" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add Microsoft.VisualStudio.Composition --version 16.9.20
The NuGet Team does not provide support for this client. Please contact its maintainers for support.
#r "nuget: Microsoft.VisualStudio.Composition, 16.9.20"
#r directive can be used in F# Interactive, C# scripting and .NET Interactive. Copy this into the interactive tool or source code of the script to reference the package.
// Install Microsoft.VisualStudio.Composition as a Cake Addin
#addin nuget:?package=Microsoft.VisualStudio.Composition&version=16.9.20

// Install Microsoft.VisualStudio.Composition as a Cake Tool
#tool nuget:?package=Microsoft.VisualStudio.Composition&version=16.9.20
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Lightning fast MEF engine, supporting System.ComponentModel.Composition and System.Composition.

NuGet packages (13)

Showing the top 5 NuGet packages that depend on Microsoft.VisualStudio.Composition:

Package Downloads

Reference assemblies for Visual Studio Project System Extensibility


.NET Compiler Platform ("Roslyn") support for Visual Studio. More details at This package was built from the source at


Extensibility APIs for Open Folder in Visual Studio.


Convert VB.NET to/from C# * Accurate: Full project context (through Roslyn) is used to get the most accurate conversion. * Actively developed: User feedback helps us continuously strive for a more accurate conversion. * Completely free and open source This nuget package is useful if you're building a tool which converts code, or if you want finer-grained control over what's converted. See for a pre-built command line, visual studio extension and web converter.


Roslyn Analyzer Test Framework Common Types.

GitHub repositories (20)

Showing the top 5 popular GitHub repositories that depend on Microsoft.VisualStudio.Composition:

Repository Stars
.NET debugger and assembly editor
The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.
.NET Decompiler with support for PDB generation, ReadyToRun, Metadata (&more) - cross-platform!
Git Extensions is a standalone UI tool for managing git repositories. It also integrates with Windows Explorer and Microsoft Visual Studio (2015/2017/2019).
MonoDevelop is a cross platform .NET IDE
Version Downloads Last updated
16.9.20 8,664 3/20/2021
16.9.13 829 4/15/2021
16.9.6-alpha 17,068 12/8/2020
16.4.11 153,750 10/2/2019
16.3.7 19,860 8/26/2019
16.3.4-alpha 577 8/16/2019
16.1.8 212,976 5/23/2019
16.0.12-beta 5,842 1/15/2019
15.8.118 7,916 8/6/2019
15.8.117 115,790 1/15/2019
15.8.112 113,045 12/18/2018
15.8.98 659,145 7/10/2018
15.8.89-alpha 1,971 5/10/2018
15.8.87-alpha 752 5/7/2018
15.8.55-alpha 2,343 3/9/2018
15.8.27-alpha 824 12/30/2017
15.6.36 475,002 2/15/2018
15.6.31-beta 783 12/30/2017
15.5.23 308,809 12/5/2017
15.3.38 102,892 4/26/2017
15.0.71 70,279 2/27/2017
15.0.70 341,468 2/23/2017
15.0.66-rc 87,987 1/6/2017
15.0.30-pre 16,072 8/16/2016
15.0.16-pre 14,761 3/30/2016
14.2.19-pre 74,906 4/7/2016
14.0.50715-pre 22,489 7/21/2015
14.0.50417-pre 2,869 4/29/2015