roslyn — open-source software health

NuGet · npm

98Exceptionalhealth index

Open-source platform for building cross-platform native Mobile, Web, Desktop, and Embedded apps from a single C#/XAML codebase. Work from any IDE/CLI with Hot Reload, Visual Designer, MCPs, and Skills built for modern .NET workflows. 200M+ NuGet downloads.

C#★ 10KAug 28, 2026

Apache-2.0Aug 28, 2026 · metrics 2.10.0

—

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

Maven

94Exceptionalhealth index

SonarSource/sonar-dotnet

Code analyzer for C# and VB.NET projects

C# · HTML★ 918Sep 15, 2026

Custom licenseSep 15, 2026 · metrics 2.10.0

NuGet · npm

94Exceptionalhealth index

riok/mapperly

A .NET source generator for generating object mappings. No runtime reflection.

C#★ 4,197Oct 21, 2026

Apache-2.0Oct 21, 2026 · metrics 2.10.0

NuGet

92Excellenthealth index

meziantou/Meziantou.Analyzer

A powerful C# Roslyn analyzer that uses static analysis to detect bugs, surface security issues, and enforce best practices—helping developers and AI write more reliable code.

C#★ 1,192Sep 12, 2026

MITSep 12, 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

90Excellenthealth index

philips-software/roslyn-analyzers

Roslyn Diagnostic Analyzers are customized compiler errors providing real-time feedback to C# developers. Each Analyzer optionally includes an automatic Code Fixer.

C#★ 57Sep 11, 2026

MITSep 11, 2026 · metrics 2.10.0

NuGet · PyPI

87Excellenthealth index

themidnightgospel/Imposter

Mocking library with the perfect balance of Performance and Intuitive API

C#★ 649Oct 6, 2026

MITOct 6, 2026 · metrics 2.10.0

NuGet

86Excellenthealth index

kontent-ai/delivery-sdk-net

Kontent.ai Delivery .NET SDK

C#★ 36Sep 16, 2026

MITSep 16, 2026 · metrics 2.10.0

NuGet

83Excellenthealth index

georgepwall1991/LinqContraband

EF Core LINQ performance analyzer and Roslyn analyzer for catching N+1 queries, client-side evaluation, sync-over-async, raw SQL risks, and other query issues at compile time.

C#★ 9Sep 15, 2026

MITSep 15, 2026 · metrics 2.10.0

NuGet

81Excellenthealth index

dailydevops/arguments

Provides a set of backward compatible `throw` helper methods, which have been added in previous .NET versions.

C#★ 0Sep 13, 2026

MITSep 13, 2026 · metrics 2.10.0

NuGet · RubyGems

81Excellenthealth index

devlooped/ThisAssembly

Expose project and assembly level information as constants in the ThisAssembly class using source generators powered by Roslyn.

C#★ 532Aug 27, 2026

MITAug 27, 2026 · metrics 2.10.0

NuGet

80Excellenthealth index

Lombiq/.NET-Analyzers

.NET code analyzers and code convention settings for Lombiq projects.

PowerShell · C#★ 35Sep 11, 2026

BSD-3-ClauseSep 11, 2026 · metrics 2.10.0

NuGet

80Excellenthealth index

rodri-oliveira-dev/Dapper-FluentMap

Fluent mapping for Dapper, with conventions, immutable object materialization, analyzers, source generators, DI integration, and Dommel support.

C#★ 445Sep 15, 2026

MITSep 15, 2026 · metrics 2.10.0

NuGet

80Excellenthealth index

soenneker/soenneker.utils.usings

Applies code fixes for missing using directives in a C# project using Roslyn analyzers.

C#★ 0Sep 10, 2026

MITSep 10, 2026 · metrics 2.10.0

NuGet

80Excellenthealth index

webdriverbidi-net/webdriverbidi-net

A .NET client library for the WebDriver Bidi protocol

C#★ 20Sep 15, 2026

MITSep 15, 2026 · metrics 2.10.0

NuGet

78Goodhealth index

BaryoDev/Mapsicle

Mapsicle is a high-performance, modular object mapping ecosystem for .NET.

C#★ 1Oct 19, 2026

MITOct 19, 2026 · metrics 2.10.0

NuGet

78Goodhealth index

JerrettDavis/TinyBDD

TinyBDD is a minimal, fluent Behavior-Driven Development library for .NET

C#★ 4Sep 13, 2026

MITSep 13, 2026 · metrics 2.10.0

npm

78Goodhealth index

scalar/formatters

Wasm based formatters for targets missing from wasm-fmt

TypeScript · JavaScript★ 1↓ 191.5K/moSep 18, 2026

Custom licenseSep 18, 2026 · metrics 2.10.0

NuGet · npm

77Goodhealth index

litenova/LiteBus

Modular .NET messaging for commands, queries, events, durable inbox and outbox processing, sagas, and broker transports.

C#★ 237Oct 21, 2026

MITOct 21, 2026 · metrics 2.10.0

NuGet

77Goodhealth index

xunit/xunit.analyzers

Roslyn analyzers for xUnit.net (please open issues in https://github.com/xunit/xunit)

C#★ 201Oct 20, 2026

Custom licenseOct 20, 2026 · metrics 2.10.0

NuGet · npm

77Goodhealth index

zompinc/sync-method-generator

Generates a synchronized version of an async method

C#★ 84Sep 14, 2026

MITSep 14, 2026 · metrics 2.10.0

NuGet

75Goodhealth index

Faithlife/FaithlifeAnalyzers

C# code analyzers

C#★ 2Sep 28, 2026

MITSep 28, 2026 · metrics 2.10.0

NuGet

75Goodhealth index

IEvangelist/blazorators

This project converts TypeScript type declarations into C# representations, and use C# source generators to expose automatic JavaScript interop functionality.

C#★ 393Sep 13, 2026

MITSep 13, 2026 · metrics 2.10.0

NuGet

75Goodhealth index

distantcam/AutoCtor

A Roslyn source generator for creating constructors.

C#★ 113Sep 18, 2026

MITSep 18, 2026 · metrics 2.10.0

NuGet

75Goodhealth index

georgepwall1991/CancelCop.Analyzer

C#/.NET Roslyn analyzer with 36 diagnostics and code fixes for CancellationToken propagation, async/await, ASP.NET Core, EF Core, HttpClient, gRPC, blocking I/O, and sync-over-async.

C#★ 4Sep 12, 2026

MITSep 12, 2026 · metrics 2.10.0

NuGet

75Goodhealth index

georgepwall1991/DependencyInjection.Lifetime.Analyzers

Prevent memory leaks and runtime crashes in .NET Dependency Injection. A zero-overhead Roslyn analyzer that catches captive dependencies, undisposed scopes, and lifetime mismatches at compile-time.

C#★ 10Sep 13, 2026

MITSep 13, 2026 · metrics 2.10.0

NuGet

75Goodhealth index