Nick Chapsas

unsloth. Unsloth Studio is a web UI for training and running open models like Gemma 4, Qwen3.6, DeepSeek, gpt-oss locally.

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.

AwesomeAssertions. A fork of FluentAssertions controlled by the community.

shouldly. Should testing for .NET—the way assertions should be!

l2-unity. Lineage2 into Unity3D

Replicant. A wrapper for HttpClient that caches to disk. Cached files, over the max specified, are deleted based on the last access times.

ultra. An advanced profiler for .NET Applications on Windows and macOS

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

FusionCache. FusionCache is an easy to use, fast and robust hybrid cache with advanced resiliency features.

windows. Windows inside a Docker container.

macos. MacOS inside a Docker container.

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

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

EntityFramework.Exceptions. Strongly typed exceptions for Entity Framework Core. Supports SQLServer, PostgreSQL, SQLite, Oracle and MySql.

aspirational-manifests. Handle deployments of .NET Aspire AppHost Projects

clean-architecture. The ultimate clean architecture template for .NET applications 💪

aspire. Aspire is the tool for code-first, extensible, observable dev and deploy.

QuestPDF. QuestPDF is a modern library for PDF document generation. Its fluent C# API lets you design complex layouts with clean, readable code. Create documents using a flexible, component-based approach.

the-algorithm. Source code for the X Recommendation Algorithm

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

PolySharp. PolySharp provides generated, source-only polyfills for C# language features, to easily use all runtime-agnostic features downlevel. Add a reference, set your C# version to latest and have fun! 🚀

aspnet-api-versioning. Provides a set of libraries which add service API versioning to ASP.NET Web API, OData with ASP.NET Web API, and ASP.NET Core.

CliWrap. Library for interacting with command-line interfaces

abp. Open-source web application framework for ASP.NET Core! Offers an opinionated architecture to build enterprise software solutions with best practices on top of the .NET. Provides the fundamental infrastructure, cross-cutting-concern implementations, startup templates, application modules, UI themes, tooling and documentation.

testcontainers-dotnet. A library to support tests with throwaway instances of Docker containers for all compatible .NET Standard versions.

runtime. .NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

clean-minimal-api. A project showcasing how you can build a clean Minimal API using FastEndpoints

FastEndpoints. A light-weight REST API development framework for ASP.NET 8 and newer.

dotnet-content-creators. ⚡A list of .NET content creators

aws-lambda-dotnet. Libraries, samples and tools to help .NET Core developers develop AWS Lambda functions.

.NET-Backend-Developer-Roadmap. Roadmap for a .NET Backend Developer working with Microservices

stryker-net. Mutation testing for .NET core and .NET framework!

AspNetCore-Developer-Roadmap. Roadmap to becoming an ASP.NET Core developer in 2026

Carter. Carter is framework that is a thin layer of extension methods and functionality over ASP.NET Core allowing code to be more explicit and most importantly more enjoyable.

backstage. Backstage is an open framework for building developer portals

cupboard. A framework for provisioning local environments to a desired state, using the .NET SDK.

FluentDocker. Use docker/podman, compose local and remote via a FluentAPI

Verify. Verify is a snapshot testing tool that simplifies the assertion of complex data models and documents.

CSharpRepl. A command line C# REPL with syntax highlighting – explore the language, libraries and nuget packages interactively.

NBomber. Distributed load-testing framework for .NET. Create distributed load test scenarios entirely using plain C# or F#. It is designed to test any system regardless of the protocol or a semantic model (Pull/Push).

coverlet. Cross platform code coverage for .NET

ReportGenerator. ReportGenerator converts coverage reports generated by coverlet, OpenCover, dotCover, Visual Studio, NCover, Cobertura, JaCoCo, Clover, gcov or lcov into human readable reports in various formats.

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

graphql-platform. Welcome to the home of the Hot Chocolate GraphQL server for .NET, the Strawberry Shake GraphQL client for .NET and Nitro the awesome Monaco based GraphQL IDE.

k6. A modern load testing tool, using Go and JavaScript

crank. Benchmarking infrastructure for applications

playwright. Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.

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

treant-js. Treant.js - javascript library for drawing tree diagrams

stronginject. compile time dependency injection for .NET

jab. C# Source Generator based dependency injection container implementation.

WireMock.Net. WireMock.Net is a flexible product for stubbing and mocking web HTTP responses using advanced request matching and response templating. Based on WireMock Java, but extended and different functionality. Full documentation can be found at https://wiremock.org/dotnet/.

NullGuard. Adds null argument checks to an assembly

youtube-dl. Command-line program to download videos from YouTube.com and other video sites

SmartEnum. A base class for quickly and easily creating strongly typed enum replacements in C#.

awesome-youtubers. An awesome list of awesome YouTubers that teach about technology. Tutorials about web development, computer science, machine learning, game development, cybersecurity, and more.

streamdeck-client-csharp. This is a C# wrapper library used to write Elgato Stream Deck plugins.

bloomrpc. Former GUI client for gRPC services. No longer maintained.

Ben.Demystifier. High performance understanding for stack traces (Make error logs more productive)

Mapster. A fast, fun and stimulating object to object Mapper

mac-precision-touchpad. Windows Precision Touchpad Driver Implementation for Apple MacBook / Magic Trackpad

protobuf-net. Protocol Buffers library for idiomatic .NET

antlr4. ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files.

MatBlazor. Material Design components for Blazor and Razor Components

ChartJs.Blazor. Brings Chart.js charts to Blazor

SharpLab. .NET language playground

vistr.dev. A visitor counter badge for your GitHub projects

awesome-github-profile-readme. 😎 A curated list of awesome GitHub Profile which updates in real time

github-readme-stats. :zap: Dynamically generated stats for your github readmes

Fluxor. Fluxor is a zero boilerplate Flux/Redux library for Microsoft .NET and Blazor.

micronaut-core. Micronaut Application Framework

Xamarin.Forms. Xamarin.Forms is no longer supported. Migrate your apps to .NET MAUI.

uno. 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.

LazyCache. An easy to use thread safe in-memory caching service with a simple developer friendly API for c#

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

SharpZipLib. #ziplib is a Zip, GZip, Tar and BZip2 library written entirely in C# for the .NET platform.

maui. .NET MAUI is the .NET Multi-platform App UI, a framework for building native device applications spanning mobile, tablet, and desktop.

shadow. Gradle plugin to create fat/uber JARs, apply file transforms, and relocate packages for applications and libraries. Gradle version of Maven's Shade plugin.

gethttpsforfree. Source code for https://gethttpsforfree.com/

tye. Tye is a tool that makes developing, testing, and deploying microservices and distributed applications easier. Project Tye includes a local orchestrator to make developing microservices easier and the ability to deploy microservices to Kubernetes with minimal configuration.

Recaf. The modern Java bytecode editor

BlazorMobile. Create full C# driven hybrid-apps for iOS, Android, UWP & Desktop with Blazor!

godot. Godot Engine – Multi-platform 2D and 3D game engine

MobileBlazorBindings. Experimental Mobile Blazor Bindings - Build native and hybrid mobile apps with Blazor

algo. Set up a personal VPN in the cloud

awesome-scalability. The Patterns of Scalable, Reliable, and Performant Large-Scale Systems

Micronetes. Micronetes is a local orchestrator inspired by kubernetes that makes developing and testing microservices and distributed applications easier.

Aurora. Unified lighting effects across multiple brands and various games.

spinnaker. Spinnaker is an open source, multi-cloud continuous delivery platform for releasing software changes with high velocity and confidence.

startbootstrap-clean-blog. A clean Bootstrap blog theme created by Start Bootstrap

BlazorFluentUI. Port of FluentUI/Office Fabric React components and style to Blazor

electron. :electron: Build cross-platform desktop apps with JavaScript, HTML, and CSS

WebWindow. .NET Core library to open native OS windows containing web UI on Windows, Mac, and Linux. Experimental.

free-for-dev. A list of SaaS, PaaS and IaaS offerings that have free tiers of interest to devops and infradev

blazor-redux. Connecting a Redux state store with Blazor.

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

SignalR. SignalR Core support for Microsoft ASP.NET Core Blazor

LocalStorage. A library to provide access to local storage in Blazor applications

Jil. Fast .NET JSON (De)Serializer, Built On Sigil

React.NET. .NET library for JSX compilation and server-side rendering of React components

octokit.net. A GitHub API client library for .NET

jsoneditor. A web-based tool to view, edit, format, and validate JSON

HttpRepl. The HTTP Read-Eval-Print Loop (REPL) is a lightweight, cross-platform command-line tool that's supported everywhere .NET Core is supported and is used for making HTTP requests to test ASP.NET Core web APIs and view their results.

FluentValidation. A popular .NET validation library for building strongly-typed validation rules.

HikariCP. 光 HikariCP・A solid, high-performance, JDBC connection pool at last.

Fusillade. An opinionated HTTP library for Mobile Development

reflections. Java runtime metadata analysis

koin. Koin - a pragmatic lightweight dependency injection framework for Kotlin & Kotlin Multiplatform

CosmicNotes. Cosmic drawings illustrating main concepts of Azure Cosmos DB to empower anyone to build stuff on Cosmos DB

ktor. Framework for quickly creating connected applications in Kotlin with minimal effort

KurrentDB. KurrentDB is a database that's engineered for modern software applications and event-driven architectures. Its event-native design simplifies data modeling and preserves data integrity while the integrated streaming engine solves distributed messaging challenges and ensures data consistency.

BenchmarkDotNet. Powerful .NET library for benchmarking

prometheus. The Prometheus monitoring system and time series database.

terminal. The new Windows Terminal and the original Windows console host, all in the same place!

OneOf. Easy to use F#-like ~discriminated~ unions for C# with exhaustive compile time matching

Hangfire. An easy way to perform background job processing in .NET and .NET Core applications. No Windows Service or separate process required

core. .NET news, announcements, release notes, and more!

Cosmonaut.Scaler. A simple an easy to use web based scale manager for Azure Cosmos DB

startbootstrap-sb-admin-2. A free, open source, Bootstrap admin theme created by Start Bootstrap

kotlinx.coroutines. Library support for Kotlin coroutines

cloc. cloc counts blank lines, comment lines, and physical lines of source code in many programming languages.

for-the-badge. It all started because of an obsession with two words: “build passing”. It all ended with this: badges, for badges’ sake.

refit. The automatic type-safe REST library for .NET Core, Xamarin and .NET. Heavily inspired by Square's Retrofit library, Refit turns your REST API into a live interface.

MobileMMORPG. A customizable mobile mmorpg in .net core (C# Server) and Unity (C# Client)

EditSaber. A 3d editor to create custom songs for the game BeatSaber

BeatSaberModInstaller. Automatically installs Beat Saber mods with a single click

azure-cosmos-dotnet-v3. .NET SDK for Azure Cosmos DB for the core SQL API

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

azure-webjobs-sdk-extensions. Azure WebJobs SDK Extensions

express. Fast, unopinionated, minimalist web framework for node.

reactive. The Reactive Extensions for .NET

cosmos-sign. Utility library for signing Azure Cosmos tokens and generating headers

titanium-web-proxy. A cross-platform asynchronous HTTP(S) proxy server in C#.

CosmosDB. PowerShell Module for working with Azure Cosmos DB databases, collections, documents, attachments, offers, users, permissions, triggers, stored procedures and user defined functions.

aspnetcore. ASP.NET Core is a cross-platform .NET framework for building modern cloud-based web applications on Windows, Mac, or Linux.

RestSharp. Simple REST and HTTP API Client for .NET

awesome-cosmosdb. A curated list of awesome CosmosDB resources, libraries, tools and applications

sw-exporter. This tool will parse intercepted data from Summoners War and extract information on the monsters and runes of the user.

AspNetCoreDiagnosticScenarios. This repository has examples of broken patterns in ASP.NET Core applications

html-agility-pack. Html Agility Pack (HAP) is a free and open-source HTML parser written in C# to read/write DOM and supports plain XPATH or XSLT. It is a .NET code library that allows you to parse "out of the web" HTML files.

azure-docs. Open source documentation of Microsoft Azure

Razor. [Archived] Parser and code generator for CSHTML files used in view pages for MVC web apps. Project moved to https://github.com/aspnet/AspNetCore

Electron.NET. :electron: Build cross platform desktop apps with ASP.NET Core (Razor Pages, MVC, Blazor).

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

MS-DOS. The original sources of MS-DOS 1.25, 2.0, and 4.0 for reference purposes

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

C-Sharp. All algorithms implemented in C#.

cake. :cake: Cake (C# Make) is a cross platform build automation system.

FunctionMonkey. Write more elegant Azure Functions with less boilerplate, more consistency, and support for REST APIs. Docs can be found at https://functionmonkey.azurefromthetrenches.com

Cosmonaut. 🌐 A supercharged Azure CosmosDB .NET SDK with ORM support

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

fizz. C++14 implementation of the TLS-1.3 standard

mockito. Most popular Mocking framework for unit tests written in Java

standard. This repo is building the .NET Standard

openauto. AndroidAuto headunit emulator

linqinfer. A lightweight and slightly experimental inference library for C# / LINQ

NSubstitute. A friendly substitute for .NET mocking libraries.

SignalR. Incredibly simple real-time web for .NET

TypeScript. TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

deno. A modern runtime for JavaScript and TypeScript.

ea-async. EA Async implements async-await methods in the JVM.

RxJava. RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.

FFImageLoading. Image loading, caching & transforming library for Xamarin and Windows

app-customers. A simple demo app with three screens: a list screen, a read-only detail screen, and an editable detail screen.

Xamarin.Forms.GoogleMaps. Map library for Xamarin.Forms using Google maps API

azure-storage-net. Microsoft Azure Storage Libraries for .NET

warriorjs. 🏰 An exciting game of programming and Artificial Intelligence

Ghost. Independent technology for modern publishing, memberships, subscriptions and newsletters.

machinelearning. ML.NET is an open source and cross-platform machine learning framework for .NET.

labs. The most popular and friendly mocking framework for .NET

moq. The most popular and friendly mocking framework for .NET

Polly. Polly is a .NET resilience and transient-fault-handling library that allows developers to express policies such as Retry, Circuit Breaker, Timeout, Bulkhead Isolation, and Fallback in a fluent and thread-safe manner. From version 6.0.1, Polly targets .NET Standard 1.1 and 2.0+.

SignalR. [Archived] Incredibly simple real-time web for ASP.NET Core. Project moved to https://github.com/aspnet/AspNetCore

ghost-caffeine-theme. A minimalist, Material Design inspired Ghost Theme for optimal desktop and mobile experiences

hugo. The world’s fastest framework for building websites.

csharplang. The official repo for the design of the C# programming language

blazor. Blazor moved to https://github.com/dotnet/aspnetcore

Scrutor. Assembly scanning and decoration extensions for Microsoft.Extensions.DependencyInjection

MediatR. Simple, unambitious mediator implementation in .NET

fresco. An Android library for managing images and the memory they use.

Discord.Net. An unofficial .Net wrapper for the Discord API (https://discord.com/)

traefik. The Cloud Native Application Proxy

redis. For developers, who are building real-time data-driven applications, Redis is the preferred, fastest, and most feature-rich cache, data structure server, and document and vector query engine.

language-ext. C# pure functional programming framework - come and get declarative!

L2jRoboto. A fake player engine for L2j with decision making and behaviors

L2jBrasil. L2jBrasil Project

LineageNinja. L2Ninja is a desktop application based on .NET core that aim to help L2 Server and Client Developers to be able to work with L2 Files and do their routine task easily with the less bugs possible.

fancybox. jQuery lightbox script for displaying images, videos and more. Touch enabled, responsive and fully customizable.

website-archive. Archive of the Coding Train website (first version)

websocket-manager. Real-Time library for ASP .NET Core

underscore. JavaScript's utility _ belt

L2ACP-api. The API for L2ACP

L2ACP-Web. The website for L2ACP

AspNetCore.Docs. Documentation for ASP.NET Core

You-Dont-Need-jQuery. Examples of how to do query, style, dom, ajax, event etc like jQuery with plain javascript.

vanilla-lazyload. LazyLoad is a lightweight, flexible script that speeds up your website by deferring the loading of your below-the-fold images, backgrounds, videos, iframes and scripts to when they will enter the viewport. Written in plain "vanilla" JavaScript, it leverages IntersectionObserver, supports responsive images and enables native lazy loading.

i18next. i18next: learn once - translate everywhere

ConfuserEx. An open-source, free protector for .NET applications

coding-interview-university. A complete computer science study plan to become a software engineer.

relative-time-element. Web component extensions to the standard <time> element.