Gérald Barré

lore. Lore is a next-generation, open source version control system

Binternal. Make any .NET dependency internal

dive. A tool for exploring each layer in a docker image

SymSpell. SymSpell: 1 million times faster spelling correction & fuzzy search through Symmetric Delete spelling correction algorithm

LinSpell. Fast approximate strings search & spelling correction

WordSegmentationTM. Fast Word Segmentation with Triangular Matrix

MailKit. A cross-platform .NET library for IMAP, POP3, and SMTP.

dokan-dotnet. Dokan DotNet Wrapper

FineTune. FineTune, a macOS menu bar app for per-app volume control, multi-device output, audio routing, and 10-band EQ. Free and open-source alternative to SoundSource.

Mole. 🐹 Clean, uninstall, analyze, optimize, and monitor your Mac from the terminal.

redb-route. Apache Camel-style integration framework for .NET. 80+ EIP patterns, 22 transports (Kafka, RabbitMQ, MQTT, S3, gRPC, SFTP, SQL...), fluent C# DSL.

openfga. A high performance and flexible authorization/permission engine built for developers and inspired by Google Zanzibar

hex1b. The .NET Terminal Application Stack

Beetle. Binary Encoded Event Tracing Log for Exceptions

DockAnchor. DockAnchor is a simple macOS utility that stops the Dock from moving between displays. Lock your Dock to a single screen for a more stable, distraction-free workspace. Ideal for multi-monitor setups. Lightweight, native, and runs quietly in the background.

MacsyZones. Make your workflow more efficient with MacsyZones. Organize your windows with ease. https://macsyzones.com

StrongIdAnalyzer. Roslyn analyzer that prevents primitive ID values (Guid, int, string, etc.) from being crossed between domain types at compile time

dotLLM. LLM inference engine written in .NET

TagLibSharp2. TagLibSharp2 is a clean-room implementation of media file metadata handling for .NET. Built entirely from format specifications, it's fully MIT licensed with zero runtime dependencies and a modern API.

AmorphousDiskMark. A macOS storage benchmark tool that measures read/write performance in MB/s and IOPS.

TurboXml. A .NET library to parse XML at lightspeed with zero allocation.

Motus. Extensible browser automation and testing framework for .NET. Communicates directly with Chromium (CDP) and Firefox (WebDriver BiDi) over WebSocket, no Node.js dependency. Source generated protocol bindings, Roslyn analyzers, a test recorder, a Blazor visual runner, and an MCP server for AI agents, all built on public plugin interfaces.

MiniPdf. [Beta] A minimal .NET library convert Word, Excel, PPT to PDF.

Tomlyn. Tomlyn is a TOML parser, validator and authoring library for .NET Framework and .NET Core

tree-sitter-language-pack. Comprehensive tree-sitter grammar compilation with polyglot bindings — Rust, Python, Node.js, Go, Java, Ruby, Elixir, PHP, C#, WASM, Dart, Kotlin-Android, Swift, Zig, and CLI. 306+ languages.

SharpYaml. SharpYaml is a high-performance .NET YAML parser, emitter, and object serializer - NativeAOT ready.

toasty. Tiny Windows toast notification CLI (229 KB)

TUnitMigrator. A .NET tool that migrates test projects from MSTest, NUnit, xUnit, and xUnit v3 to TUnit.

XenoAtom.Terminal.UI. XenoAtom.Terminal.UI is a modern, reactive retained-mode terminal UI framework for .NET

PublishAotCompressed. C#

CodeGlyphX. CodeGlyphX is a fast, dependency-free toolkit for QR codes and barcodes, with robust decoding and a minimal API. It targets modern .NET as well as legacy .NET Framework, and includes renderers, payload helpers, and WPF controls.

localsend. An open-source cross-platform alternative to AirDrop

dcp. Developer Control Plane API server and CLI.

Mediator. A high performance implementation of Mediator pattern in .NET using source generators.

opencode. The open source coding agent.

murmure. Fully local, private and cross platform Speech-to-Text with LLM Post-processing

flexsearch. Next-generation full-text search library for Browser and Node.js

vcr. CLI video recorder for dotnet

BencodeNET. .NET library for encoding/decoding bencode and reading/writing torrent files

MewUI. A cross-platform and lightweight, code-first .NET GUI framework aimed at NativeAOT.

Morph. Converts Microsoft Word DOCX documents into PNG images.

Naiad. A .NET library for rendering Mermaid diagrams to SVG. No browser or JavaScript runtime required.

VsixSdk. An MSBuild SDK for building Visual Studio extensions (VSIX) using modern SDK-style projects.

sharpdbg. SharpDbg is a .NET managed code debugger supporting the Debug Adapter Protocol, implemented completely in C#/.NET

XenoAtom.Ansi. Fast, allocation-friendly .NET library to generate, parse, and manipulate ANSI/VT escape sequences (writer, markup, tokenizer, ANSI-aware text utilities).

basic-reference-assemblies. Produce NuPkg files that have .NET Reference assemblies as resources

comptime. Comptime brings meta-programming capabilities to C#, enabling compile-time code generation and evaluation.

MsOfficeDiff. A .NET tool that compares two Word/Excel documents side by side using the Word/Excel built-in document comparison feature.

App. A cross-platform, free and open source music player for Jellyfin, powered by React Native

CompilerBrain. CLI Coding Agent not for Vibe-coding, for C# Expert.

blazor-devtools. C#

FastCloner. The fastest deep cloning library for .NET – zero-config, works out of the box.

SnapDB. The SNAPdb Engine is a high-performance key/value pair archiving technology.

NekoTrace. Open Telemetry tracing collector and viewer

amperfy. Amperfy is an iOS/iPadOS/macOS app to play songs from an Ampache or Subsonic server

CursorPagination. An easy-to-use efficient KeySet- and Offset-pagination library for IQueryable with included opaque Cursor support.

Infidex. The high-performance .NET search engine based on pattern recognition.

bentopdf. The Privacy First PDF Toolkit

CredentialManager. Packages the official Git Credential Manager cross-platform credential store implementation supporting Windows, macOS and Linux for use as a NS2.0 library with no UI or external dependencies.

extended-embedded-languages. VSCode extension for better syntax highlighting of embedded languages

WindowsEdgeLight. A lightweight WPF application that adds a customizable glowing edge light effect around your primary monitor

ProjectFiles. A C# source generator that provides strongly-typed, compile-time access to project files marked with CopyToOutputDirectory in the .csproj file.

compiler-explorer. Run compilers interactively from your web browser and interact with the assembly

deezer-downloader. Download music from Deezer with a nice front end

editorconfig-core-net. EditorConfig Core library and command line utility written in C# for .NET/Mono http://editorconfig.org

Ulid. A .NET C# library for generating and working with Universally Unique Lexicographically Sortable Identifiers (ULIDs), designed to be globally unique, sortable, human-readable, and AoT compatible, making them ideal for use in distributed systems and databases.

SharpIDE. A modern, cross platform IDE for .NET, built with .NET & Godot

taglib-sharp. Library for reading and writing metadata in media files

SharpFocus. Information Flow Analysis for C#. Understand What Your Code Really Does

summary-forge-module. An intelligent tool that uses OpenAI's GPT-5 to forge comprehensive summaries of ebooks in multiple formats.

zensical. A modern static site generator by the Material for MkDocs team

ResXResourceManager. Manage localization of all ResX-Based resources in one central place.

peachpie. PeachPie - the PHP compiler and runtime for .NET and .NET Core

Nerdbank.GitVersioning. Stamp your assemblies, packages and more with a unique version generated from a single, simple version.json file and include git commit IDs for non-official builds.

std-uritemplate. A complete and maintained cross-language implementation of the Uri Template specification RFC 6570 Level 4

LibSshNet. A wrapper around libssh2 for .NET

Immediate.Validations. Source generated validations for Immediate.Handlers parameters

Humanizer. Humanizer meets all your .NET needs for manipulating and displaying strings, enums, dates, times, timespans, numbers and quantities

Magick.NET. The .NET library for ImageMagick

tidarr. 🎵 Self-hosted Tidal downloader with Docker • Multi-service integration • Lidarr-compatible provider.

mediabunny. Pure TypeScript media toolkit for reading, writing, and converting video and audio files, directly in the browser.

DotNetIsolator. A library for running isolated .NET runtimes inside .NET

razor. Compiler and tooling experience for Razor ASP.NET Core apps in Visual Studio and VS Code.

SkiaSharp.Extended. SkiaSharp is a cross-platform, comprehensive 2D graphics API for all .NET platforms. And, here is where you will find all sorts of extras that you can use with it.

skia. Skia is a complete 2D graphic library for drawing Text, Geometries, and Images. See documentation for contribution instructions.

SkiaSharp. SkiaSharp is a cross-platform 2D graphics API for .NET platforms based on Google's Skia Graphics Library. It provides a comprehensive 2D API that can be used across mobile, server and desktop models to render images.

vscode-dotnettools. This is a feedback repository to capture issues logged for the C# Dev Kit and related extensions from Visual Studio Code

autogen. A programming framework for agentic AI

wcf. This repo contains the client-oriented WCF libraries that enable applications built on .NET Core to communicate with WCF services.

vscode-csharp. Official C# support for Visual Studio Code

CoreWCF. Main repository for the Core WCF project

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

Flowy.Blazor. A beautiful and interactive hierarchical tree visualization component for Blazor applications. Perfect for building family trees, organization charts, decision trees, and any hierarchical data structure with an intuitive drag-and-drop interface.

Aspire.PolyRepo. This library for DotNet Aspire enables poly repo support and the addition of Git repositories to your Aspire projects. It simplifies multi-repository management and streamlines dependency handling, making it easier to work with multiple repositories in a Aspire project.

live-blog-writer. Blog writer extension with WYSIWYG editor for VS Code with initial support for WordPress and Blogger blogs.

MergeSVG. Assemble SVGs exactly as you envision: drag & drop placement, pixel-perfect alignment, rich styling, and one-click merge.

yt-dlp. A feature-rich command-line audio/video downloader

TruePath. File path abstraction library for .NET.

CLRCLI. CLRCLI is an event-driven library for building line-art user interfaces in C#/.Net command-line applications.

Brighter. A framework for building messaging apps with .NET and C#.

Zen. Zen is a constraint solving library for .NET

VelloSharp. .NET bindings for vello a GPU compute-centric 2D renderer.

WinUIEx. WinUI Extensions

Excelsior. Excelsior is a Excel spreadsheet generation library with a distinctive data-driven approach.

testlogger. Junit, Xunit and NUnit loggers for the .NET test platform

dd-trace-dotnet. .NET Client Library for Datadog APM

KubeUI. Kubernetes User Interface

agent-framework. A framework for building, orchestrating and deploying AI agents and multi-agent workflows with support for Python and .NET.

DeskFrame. Organize your desktop into frames

capture. An open source hardware monitoring agent for Checkmate

Checkmate. Checkmate is an open-source, self-hosted tool designed to track and monitor server hardware, uptime, response times, and incidents in real-time with beautiful visualizations. Don't be shy, join here: https://discord.com/invite/NAb6H3UTjK :)

spelungit. An MCP server for searching git history using natural language

TypingSVG. A More Powerful Typing SVG Generator—multi-line & blank-space formatting, multiple cursor styles, customizable delete speed, and more.

ImHex. 🔍 A Hex Editor for Reverse Engineers, Programmers and people who value their retinas when working at 3 AM.

dotnet-affected. .NET tool for determining which projects are affected by a set of changes. Useful for large projects or monorepos.

ActiveN. ActiveN is a lightweight framework for building classic COM components and OLE/ActiveX controls in modern fully AOT-compatible .NET, with registration-ready deployment.

NuSeal. A .NET library that helps you protect your NuGet packages with commercial licenses.

NxGraph. NxGraph is a zero-allocation runtime, high-performance finite state machine (FSM) framework for .NET 8+, designed for scenarios where execution speed, memory efficiency, and runtime safety are critical.

Incrementalist. Git-based incremental build and testing platform for .NET and .NET Core.

NativeCompressions. NativeCompressions is the native binding and high-level API of ZStandard, LZ4 and OpenZL compression library for .NET and Unity.

Bogus. :card_index: A simple fake data generator for C#, F#, and VB.NET. Based on and ported from the famed faker.js.

AppSettingsStudio. A GUI for centralizing .NET appsettings.json management. Provides a unified view to edit, validate, and apply changes across multiple projects and/or binaries, including WSL on Windows, with support for live updates.

DotTray. Lightweight Windows Notification Icon without any dependencies

fluentui-blazor-community-extensions. Community components which built on top of the official Microsoft Fluent UI Blazor components.

Artemis. Provides advanced unified lighting across many different brands RGB peripherals

Intellenum. Intelligent Enums

ffmime. Get mime type codecs for MSE in webassembly

Doxie. A search engine, local to your machine, focused on source (or textual information) code.

testfx. This repository holds the source code of Microsoft.Testing.Platform (MTP), a lightweight alternative to VSTest, as well as MSTest adapter and framework.

BizHawk. BizHawk is a multi-system emulator written in C#. BizHawk provides nice features for casual gamers such as full screen, and joypad support in addition to full rerecording and debugging tools for all system cores.

ExecutableMemory.NET. A sample project for writing and executing assembly in C#.

terrafx.interop.windows. Interop bindings for Windows.

iced. Blazing fast and correct x86/x64 disassembler, assembler, decoder, encoder for Rust, .NET, Java, Python, Lua

TickerQ. TickerQ is a fast, reflection-free background task scheduler for .NET built with source generators, EF Core integration, cron + time-based execution, and a real-time dashboard.

paths-filter. Conditionally run actions based on files modified by PR, feature branch or pushed commits

documentdb. MongoDB-compatible database engine for cloud-native and open-source workloads. Built for scalability, performance, and developer productivity.

wcwidth. A .NET library that calculates the width of Unicode characters.

spectre.console. A .NET library that makes it easier to create beautiful console applications.

ilspy-vscode. ILSpy Visual Studio Code Extension and Service for Decompiling .NET Assemblies

DistIL. Post-build IL optimizer and intermediate representation for .NET programs

T4Editor. Enhance your T4 experience in Visual Studio. Supports VS 2019/2022/2026

CliWrap. Library for interacting with command-line interfaces

BuildXL. Microsoft Build Accelerator

awesome-copilot. Community-contributed instructions, agents, skills, and configurations to help you make the most of GitHub Copilot.

AnyDiff. A CSharp (C#) diff library that allows you to diff two objects and get a list of the differences back.

vscode-copilot-chat. Copilot Chat extension for VS Code

DnsClient.NET. DnsClient.NET is a simple yet very powerful and high performant open source library for the .NET Framework to do DNS lookups

azure-keyvault-emulator. An emulator for Azure Key Vault. Compatible with the Azure Client SDK, runnable with Docker or Aspire.

WinNUT-Client. This is a NUT windows client for monitoring your ups hooked up to your favorite linux server.

DotNetLab. C# and Razor compiler playground in the browser via Blazor WebAssembly

JsRuntimeAot. A .NET9+ AOT compatible wrapper over the Microsoft "Chakra" JavaScript engine (aka JScript9.dll). => It's just one 2500 lines of C# file that allows you to run Javascript code from .NET

superpower. A C# parser construction toolkit with high-quality error reporting

MimeTypeCore. All the MIME/file extension pairs you will ever need. Comes with optional, magic bytes-based collision resolution.

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.

n8n. Fair-code workflow automation platform with native AI capabilities. Combine visual building with custom code, self-host or cloud, 400+ integrations.

Foundry-Local. C++

profile-explorer. CPU profiling trace viewer

ts-to-go. Very hacky transformer from TS to Go

edit. We all edit.

genaiscript. Automatable GenAI Scripting

nuke. 🏗 The AKEless Build System for C#/.NET

csharp-sdk. The official C# SDK for Model Context Protocol servers and clients. Maintained in collaboration with Microsoft.

rybbit. 🐸 Rybbit - open-source and privacy-friendly alternative to Google Analytics that is 10x more intuitive.

Satori. Experimenting with dotnet runtime.

Metalama.Documentation. Documentation of Metalama aspect framework. Available online at https://doc.metalama.net/.

Metalama.Samples. A set of samples for Metalama aspect framework.

Metalama.Compiler. A fork of Roslyn that adds an extension point that allows for arbitrary code modifications.

Metalama. A meta-programming framework for code generation, aspect-oriented programming, and architecture verification of large C# codebases.

cecil. Cecil is a library to inspect, modify and create .NET programs and libraries.

CentralisedPackageConverter. Converts a project to use Centralised Package Management

zio. A cross-platform abstract/virtual filesystem framework with many built-ins filesystems for .NET

CppAst.NET. CppAst is a .NET library providing a C/C++ parser for header files powered by Clang/libclang with access to the full AST, comments and macros

gitbutler. The GitButler version control client, backed by Git, powered by Tauri/Rust/Svelte

IgnoresAccessChecksToGenerator. Generates reference assemblies where all the internal types & members become public, and applies the IgnoresAccessChecksTo attribute

strongnamer. C#

NuGetPackageExplorer. Create, update and deploy Nuget Packages with a GUI

zxcvbn-cs. C#/.NET port of Dan Wheeler/DropBox's Zxcvbn JS password strength estimation library

zxcvbn. Low-Budget Password Strength Estimation

SuppressionCleanupTool. Removes nullability and pragma warning suppressions that are no longer necessary.

dotnet-regex-parser. Parse dotnet Regexes to Syntax Trees (AST)

Facet. Generate DTOs, mappings, constructors and LINQ projections from your domain models.

Meziantou.Polyfill. C#

Win32InteropBuilder. A tool to generate .NET AOT-friendly Win32 interop code from Microsoft.Windows.SDK.Win32Metadata package.

WebView2Aot. WebView2 .NET AOT-compatible bindings independent from WinForms or WPF.

rclone. "rsync for cloud storage" - Google Drive, S3, Dropbox, Backblaze B2, One Drive, Swift, Hubic, Wasabi, Google Cloud Storage, Azure Blob, Azure Files, Yandex Files

Dapper.Contrib. Dapper community contributions - additional extensions for Dapper

DapperAOT. Build time tools in the flavor of Dapper

Dapper. Dapper - a simple object mapper for .Net

LiteDB.Studio. A GUI tool for viewing and editing documents for LiteDB v5

LiteDB. LiteDB - A .NET NoSQL Document Store in a single data file

Delta. An approach to implementing a 304 Not Modified leveraging DB change tracking

CSnakes. Embed Python in .NET

AutoMapper. A convention-based object-object mapper in .NET.

MediatR. Simple, unambitious mediator implementation in .NET

Blazor.Diagrams. A fully customizable and extensible all-purpose diagrams library for Blazor

TUnit. A modern, fast and flexible .NET testing framework

FakeItEasy.Analyzers. Roslyn analyzers to detect incorrect usages of FakeItEasy

FakeItEasy. The easy mocking library for .NET

DTasks. DTasks is a zero-abstraction durable task library.

ZLinq. Zero allocation LINQ with LINQ to Span, LINQ to SIMD, and LINQ to Tree (FileSystem, JSON, GameObject, etc.) for all .NET platforms and Unity, Godot.