PolyShim

v2.9.0

Collection of polyfills that enable many modern framework APIs and compiler features for projects targeting older versions of .NET.

Tyrrrz

polyfill shims compat compatibility

NuGet Stats Changelog

Total Downloads

64.4K

64,435

Published

Apr 14, 2026

Latest stable version

Install

.NET CLI

dotnet add package PolyShim --version 2.9.0

Package Manager Console

Install-Package PolyShim -Version 2.9.0

PackageReference

<PackageReference Include="PolyShim" Version="2.9.0" />

Frameworks

.NETCoreApp1.1 .NETFramework3.5 .NETFramework4.0 .NETFramework4.5 .NETFramework4.6.1 .NETFramework4.6.2 .NETFramework4.8 .NETStandard1.0 .NETStandard1.1 .NETStandard1.6 .NETCoreApp2.2 .NETCoreApp3.1 net5.0 net7.0 net8.0 .NETStandard2.0 .NETStandard2.1

Dependencies

Microsoft.NETCore.App

.NETCoreApp1.1

[1.1.2, )

NETStandard.Library

.NETStandard1.0

[1.6.1, )

NETStandard.Library

.NETStandard1.1

[1.6.1, )

NETStandard.Library

.NETStandard1.6

[1.6.1, )

Adoption guide

Assess this package against its supported frameworks, license, maintenance signals and dependency graph before making it a project standard.

Compatibility metadata lists 17 target frameworks; confirm the exact target used by your application.

How to read this guidance

Sources: published NuGet v3 registry metadata and explicit NuBrowse editorial guides. Refresh: package metadata is refreshed from NuGet when the page loads. Limit: this is not a security, legal or compatibility guarantee; validate the selected version in your project.

Useful next steps

Move from package metadata to a concrete selection or review workflow.

Audit NuGet dependencies in a .NET project Review NuGet licenses before shipping