Polyfill 9.9.0

.NET 5.0 This package targets .NET 5.0. The package is compatible with this framework or higher. .NET Core 2.0 This package targets .NET Core 2.0. 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. .NET Framework 4.6.1 This package targets .NET Framework 4.6.1. The package is compatible with this framework or higher. 
dotnet add package Polyfill --version 9.9.0
                    


                    

                
NuGet\Install-Package Polyfill -Version 9.9.0
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="Polyfill" Version="9.9.0">
  <PrivateAssets>all</PrivateAssets>
  <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
</PackageReference>
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Polyfill" Version="9.9.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Polyfill">
  <PrivateAssets>all</PrivateAssets>
  <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
</PackageReference>
                    


                            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 Polyfill --version 9.9.0
                    


                    

                
#r "nuget: Polyfill, 9.9.0"
#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 Polyfill@9.9.0
#: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=Polyfill&version=9.9.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Polyfill&version=9.9.0
                    


                            Install as a Cake Tool

Source only packages that exposes newer .net and C# features to older runtimes.

Product Compatible and additional computed target framework versions.
.NET net5.0 is compatible.  net5.0-windows was computed.  net6.0 is compatible.  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 is compatible.  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 is compatible.  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.  net11.0 is compatible. 
.NET Core netcoreapp2.0 is compatible.  netcoreapp2.1 is compatible.  netcoreapp2.2 is compatible.  netcoreapp3.0 is compatible.  netcoreapp3.1 is compatible. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 is compatible. 
.NET Framework net461 is compatible.  net462 is compatible.  net463 was computed.  net47 is compatible.  net471 is compatible.  net472 is compatible.  net48 is compatible.  net481 is compatible. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Universal Windows Platform uap was computed.  uap10.0 is compatible. 
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.

This package has no dependencies.

NuGet packages (48)

Showing the top 5 NuGet packages that depend on Polyfill:

Package Downloads
vies-dotnet-api

European VIES VAT validation for dotnet.
ktsu.Extensions

A collection of useful extension methods for .NET types including strings, collections, dictionaries, enumerables, and reflection.
ktsu.AppDataStorage

Application data management library using JSON serialization to save and load data in the user's app data folder.
ktsu.CaseConverter

A library with extension methods to convert strings between common casings used in code.
ktsu.FuzzySearch

Lightweight .NET fuzzy string matching library with intelligent scoring for search-as-you-type, command palettes, and flexible string matching applications.

GitHub repositories (34)

Showing the top 20 popular GitHub repositories that depend on Polyfill:

Repository Stars
Humanizr/Humanizer
Humanizer meets all your .NET needs for manipulating and displaying strings, enums, dates, times, timespans, numbers and quantities
ClosedXML/ClosedXML
ClosedXML is a .NET library for reading, manipulating and writing Excel 2007+ (.xlsx, .xlsm) files. It aims to provide an intuitive and user-friendly interface to dealing with the underlying OpenXML API.
akkadotnet/akka.net
Canonical actor model implementation for .NET with local + distributed actors in C# and F#.
cyanfish/naps2
Scan documents to PDF and more, as simply as possible.
thomhurst/TUnit
A modern, fast and flexible .NET testing framework
VerifyTests/Verify
Verify is a snapshot testing tool that simplifies the assertion of complex data models and documents.
shouldly/shouldly
Should testing for .NET—the way assertions should be!
ardalis/Specification
Base class with tests for adding specifications to a DDD model
andrewlock/StronglyTypedId
A Rosyln-powered generator for strongly-typed IDs
ikvmnet/ikvm
A Java Virtual Machine and Bytecode-to-IL Converter for .NET
MarimerLLC/csla
A home for your business logic in any .NET application.
andrewlock/NetEscapades.EnumGenerators
A source generator for generating fast "reflection" methods for enums
microsoft/testfx
This repository holds the source code of Microsoft.Testing.Platform (MTP), a lightweight alternative to VSTest, as well as MSTest adapter and framework.
getsentry/sentry-dotnet
Sentry SDK for .NET
sveinungf/spreadcheetah
SpreadCheetah is a high-performance .NET library for generating spreadsheet (Microsoft Excel XLSX) files.
SimonCropp/Replicant
A wrapper for HttpClient that caches to disk. Cached files, over the max specified, are deleted based on the last access times.
approvals/ApprovalTests.Net
ApprovalTest verification library for .Net
CopyText/TextCopy
A cross platform package to copy text to and from the clipboard.
lofcz/LLMTornado
The .NET library to build AI agents with 30+ built-in connectors.
DataDog/dd-trace-dotnet
.NET Client Library for Datadog APM
Version Downloads Last Updated
9.9.0 1,588 2/14/2026
9.8.1 16,961 2/3/2026
9.8.0 4,402 2/1/2026
9.7.7 7,286 1/28/2026
9.7.6 9,610 1/24/2026
9.7.5 2,198 1/22/2026
9.7.4 2,379 1/21/2026
9.7.3 11,772 1/14/2026
9.7.2 4,794 1/13/2026
9.7.1 2,389 1/12/2026
9.7.0 4,139 1/10/2026
9.6.0 9,277 1/3/2026
9.5.0 9,558 12/23/2025
9.4.1 8,314 12/19/2025
9.4.0 1,682 12/18/2025
9.3.4 11,526 12/10/2025
9.3.2 2,814 12/8/2025
9.3.1 11,307 12/2/2025
9.3.0 12,809 11/23/2025
9.2.0 3,314 11/21/2025
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