visual-studio — open-source software health

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98Exceptionalhealth index

dotnet/fsharp

The F# compiler, F# core library, F# language service, and F# tooling integration for Visual Studio

F#★ 4,322Aug 28, 2026

MITAug 28, 2026 · metrics 2.10.0

NuGet

98Exceptionalhealth index

dotnet/msbuild

The Microsoft Build Engine (MSBuild) is the build platform for .NET and Visual Studio.

C#★ 5,550Oct 20, 2026

MITOct 20, 2026 · metrics 2.10.0

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98Exceptionalhealth index

dotnet/sdk

Core functionality needed to create .NET Core projects, that is shared between Visual Studio and CLI

C#★ 3,194Sep 5, 2026

MITSep 5, 2026 · metrics 2.10.0

NuGet

98Exceptionalhealth index

microsoft/vstest

Visual Studio Test Platform is the runner and engine that powers test explorer and vstest.console.

C#★ 969Sep 9, 2026

MITSep 9, 2026 · metrics 2.10.0

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96Exceptionalhealth index

dotnet/roslyn

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C# · Visual Basic .NET★ 20.7KSep 16, 2026

MITSep 16, 2026 · metrics 2.10.0

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96Exceptionalhealth index

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.

C#★ 1,044Sep 9, 2026

MITSep 9, 2026 · metrics 2.10.0

npm

94Exceptionalhealth index

OpenRCT2/OpenRCT2

An open source re-implementation of RollerCoaster Tycoon 2 🎢

C++★ 16.3K↓ 943/moOct 3, 2026

GPL-3.0Oct 3, 2026 · metrics 2.10.0

NuGet

93Exceptionalhealth index

microsoft/vs-mef

Managed Extensibility Framework (MEF) implementation used by Visual Studio

C#★ 464Sep 9, 2026

MITSep 9, 2026 · metrics 2.10.0

NuGet

93Exceptionalhealth index

rr-wfm/MSBuild.Sdk.SqlProj

An MSBuild SDK that provides similar functionality to SQL Server Data Tools (.sqlproj) projects

C#★ 473Sep 15, 2026

MITSep 15, 2026 · metrics 2.10.0

NuGet

91Excellenthealth index

dotnet/roslynator

Roslynator is a set of code analysis tools for C#, powered by Roslyn.

C#★ 3,488Oct 21, 2026

Custom licenseOct 21, 2026 · metrics 2.10.0

NuGet

91Excellenthealth index

microsoft/VSSDK-Analyzers

Roslyn analyzers for Visual Studio extensions

C# · PowerShell★ 55Sep 11, 2026

MITSep 11, 2026 · metrics 2.10.0

npm

91Excellenthealth index

microsoft/vscode-generator-code

Visual Studio Code extension generator

JavaScript★ 1,627↓ 16.1K/moSep 12, 2026

Custom licenseSep 12, 2026 · metrics 2.10.0

NuGet

88Excellenthealth index

nunit/nunit3-vs-adapter

NUnit 3.0 Visual Studio test adapter for use under VS 2012 or later

C#★ 215Oct 20, 2026

MITOct 20, 2026 · metrics 2.10.0

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84Excellenthealth index

fastfloat/fast_float

Fast and exact implementation of the C++ from_chars functions for number types: 4x to 10x faster than strtod, part of GCC 12, MySQL, DuckDB, Chromium, Redis and WebKit/Safari

C++★ 2,094Sep 7, 2026

Apache-2.0Sep 7, 2026 · metrics 2.10.0

NuGet

83Excellenthealth index

microsoft/MSBuildLocator

An API to locate MSBuild assemblies from an installed Visual Studio location. Use this to ensure that calling the MSBuild API will use the same toolset that a build from Visual Studio or msbuild.exe would.

C#★ 262Sep 9, 2026

Custom licenseSep 9, 2026 · metrics 2.10.0

NuGet

81Excellenthealth index

marcominerva/TinyHelpers

A collection of helper methods and classes for .NET that I use every day. I have packed them in a single library to avoid code duplication.

C#★ 257Sep 13, 2026

MITSep 13, 2026 · metrics 2.10.0

NuGet

80Excellenthealth index

Aptivi/Nitrocid

A simulator for our future-planned kernel, Nitrocid Kernel!

C#★ 15Sep 12, 2026

GPL-3.0Sep 12, 2026 · metrics 2.10.0

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80Excellenthealth index

OpenTouryoProject/OpenTouryo

”Open棟梁”は、長年の.NETアプリケーション開発実績にて蓄積したノウハウに基づき開発した.NET用アプリケーションフレームワークです。 (”OpenTouryo” , is an application framework for .NET which was developed using the accumulated know-how with a long track record in .NET application development.)

C# · Visual Basic .NET · JavaScript★ 238Sep 17, 2026

Custom licenseSep 17, 2026 · metrics 2.10.0

NuGet

80Excellenthealth index

PrismLibrary/Prism

Prism is a framework for building loosely coupled, maintainable, and testable XAML applications in WPF, Xamarin Forms, and Uno / Win UI Applications..

C#★ 6,839Aug 28, 2026

Custom licenseAug 28, 2026 · metrics 2.10.0

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78Goodhealth index

ErikEJ/EFCorePowerTools

Entity Framework Core Power Tools - reverse engineering, migrations and model visualization in Visual Studio & CLI

C#★ 2,515Sep 11, 2026

MITSep 11, 2026 · metrics 2.10.0

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73Goodhealth index

Krypton-Suite/Standard-Toolkit

An update to Component factory's krypton toolkit to support .NET Framework 4.6.2 - 4.8.1 to .NET 8 - 10

C#★ 619Sep 11, 2026

BSD-3-ClauseSep 11, 2026 · metrics 2.10.0

npm

71Goodhealth index

Codeneos/vlocode

Vlocity development extension for Visual Studio Code

TypeScript★ 34↓ 11.6K/moOct 10, 2026

MITOct 10, 2026 · metrics 2.10.0

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71Goodhealth index

dotnet/project-system

The .NET Project System for Visual Studio

C#★ 1,024Sep 11, 2026

MITSep 11, 2026 · metrics 2.10.0

NuGet

71Goodhealth index

marcominerva/SimpleAuthentication

A library to easily integrate Authentication in ASP.NET Core projects.

C#★ 252Sep 15, 2026

MITSep 15, 2026 · metrics 2.10.0

NuGet

69Goodhealth index

marcominerva/MinimalHelpers

A collection of helpers libraries for Minimal API projects.

C# · PowerShell★ 141Sep 15, 2026

MITSep 15, 2026 · metrics 2.10.0

npm

69Goodhealth index

takara-ai/miru-code

Code search that lets AI coding agents find the right files in fewer steps. Use the hosted endpoint or self-host, works with Claude Code, Copilot and Cursor via MCP.

TypeScript★ 11↓ 1,315/moSep 12, 2026

MITSep 12, 2026 · metrics 2.10.0

NuGet

57Moderatehealth index