🇬🇧 Made in United Kingdom

Discover United Kingdom's Leading Open Source Projects: Explore top-notch open source initiatives hailing from the vibrant tech community of United Kingdom.

AvaloniaUI/Avalonia

Develop Desktop, Embedded, Mobile and WebAssembly apps with C# and XAML. The most popular .NET UI client technology

louthy/language-ext

C# functional language extensions - a base class library for functional programming

canton7/SyncTrayzor

Windows tray utility / filesystem watcher / launcher for Syncthing

EventStore/EventStore

EventStoreDB, the event-native database. Designed for Event Sourcing, Event-Driven, and Microservices architectures

Davidobot/BetterJoy

Allows the Nintendo Switch Pro Controller, Joycons and SNES controller to be used with CEMU, Citra, Dolphin, Yuzu and as generic XInput

bombomby/optick

C++ Profiler For Games

Facepunch/Facepunch.Steamworks

Another fucking c# Steamworks implementation

mcintyre321/OneOf

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

benaadams/Ben.Demystifier

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

rnwood/smtp4dev

smtp4dev - the fake smtp email server for development and testing

Stability-AI/StableSwarmUI

StableSwarmUI, A Modular Stable Diffusion Web-User-Interface, with an emphasis on making powertools easily accessible, high performance, and extensibility.

adamhathcock/sharpcompress

SharpCompress is a fully managed C# library to deal with many compression types and formats.

RolandPheasant/TailBlazer

A modern file tail utility based on Rx.Net which show cases reactive programming and Dynamic Data (see https://github.com/RolandPheasant/DynamicData)

ButchersBoy/Dragablz

Dragable and tearable tab control for WPF

Antaris/RazorEngine

Open source templating engine based on Microsoft's Razor parsing engine

betalgo/openai

OpenAI ChatGPT, Whisper, GPT-3 , GPT-4, Azure OpenAI and DALL-E dotnet SDK

BrighterCommand/Brighter

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

phw198/OutlookGoogleCalendarSync

Sync your Outlook and Google calendars

alastairtree/LazyCache

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

SamboyCoding/Cpp2IL

Work-in-progress tool to reverse unity's IL2CPP toolchain.

zkavtaskin/Domain-Driven-Design-Example

Blog series supplementary domain-driven design C# repository that (hopefully) actually makes sense.

VitalElement/AvalonStudio

Cross platform IDE and Shell

thefuntastic/Unity3d-Finite-State-Machine

An intuitive Unity3d finite state machine (FSM). Designed with an emphasis on usability, without sacrificing utility.

andrewlock/StronglyTypedId

A Rosyln-powered generator for strongly-typed IDs

asadsahi/AspNetCoreSpa

Asp.Net 7.0 & Angular 15 SPA Fullstack application with plenty of examples. Live demo:

BenMorris/NetArchTest

A fluent API for .Net that can enforce architectural rules in unit tests.

ThatRendle/Simple.Data

A light-weight, dynamic data access component for C# 4.0

bezzad/Downloader

Fast, cross-platform and reliable multipart downloader with asynchronous progress events for .NET applications.

amaneureka/AtomOS

A multitasking monolithic Kernel based x86 targeting Operating System written in C# from scratch aiming for high-level implementation of drivers in managed environment.

mrpmorris/Fluxor

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

sebas77/Svelto.ECS

Svelto ECS C# Entity Component System

Unity-UI-Extensions/com.unity.uiextensions

pizzaboxer/bloxstrap

An open-source, alternative bootstrapper for Roblox.

Webreaper/Damselfly

Damselfly is a server-based Photograph Management app. The goal of Damselfly is to index an extremely large collection of images, and allow easy search and retrieval of those images, using metadata such as the IPTC keyword tags, as well as the folder and file names. Damselfly includes support for object/face detection, and face-recognition.

Suprcode/Crystal

Legend of Mir 2 - Official Public Crystal Source

saaskit/saaskit

A developer toolkit for building SaaS applications

canton7/RestEase

Easy-to-use typesafe REST API client library for .NET Standard 1.1 and .NET Framework 4.5 and higher, which is simple and customisable. Inspired by Refit

thomhurst/TUnit

A modern, fast and flexible .NET testing framework

tgjones/gemini

Gemini is an IDE framework similar in concept to the Visual Studio Shell. It uses AvalonDock and has an MVVM architecture based on Caliburn Micro.

linvi/tweetinvi

Tweetinvi, an intuitive Twitter C# library for the REST and Stream API. It supports .NET, .NETCore, UAP (Xamarin)...

handcircus/Unity-Resource-Checker

Editor utility for unity to help check resources in the current scene (including active textures, their sizes, materials, meshes and which objects are using them)

andrewkirillov/AForge.NET

AForge.NET Framework is a C# framework designed for developers and researchers in the fields of Computer Vision and Artificial Intelligence - image processing, neural networks, genetic algorithms, machine learning, robotics, etc.

hermitdave/FrequencyWords

Repository for Frequency Word List Generator and processed files

mgravell/fast-member

Automatically exported from code.google.com/p/fast-member

canton7/Stylet

A very lightweight but powerful ViewModel-First MVVM framework for WPF for .NET Framework and .NET Core, inspired by Caliburn.Micro.

Nexus-Mods/Nexus-Mod-Manager

andrewlock/NetEscapades.EnumGenerators

A source generator for generating fast "reflection" methods for enums

benjamin-hodgson/Pidgin

A lightweight and fast parsing library for C#.

ciro-unity/UnityRoyale-Public

Public release of the Unity Royale project. All of the assets are redistributable.

handzlikchris/FastScriptReload

Hot Reload implementation for Unity. Iterate on code insanely fast without breaking play session. Supports any editor. 1. Play 2. Make change 3. See results

markjprice/cs10dotnet6

Repository for the Packt Publishing book titled "C# 10 and .NET 6 - Modern Cross-Platform Development" by Mark J. Price

aliostad/CacheCow

An implementation of HTTP Caching in .NET Core and 4.5.2+ for both the client and the server

RobinPerris/DarkUI

Dark themed control and docking library for .NET WinForms.

grumpydev/TinyIoC

An easy to use, hassle free, Inversion of Control Container for small projects, libraries and beginners alike.

inthehand/32feet

Personal Area Networking for .NET. Open source and professionally supported

Nexus-Mods/NexusMods.App

Home of the development of the Nexus Mods App

riperiperi/FreeSO

Re-implementation of The Sims Online.

bats3c/ADCSPwn

A tool to escalate privileges in an active directory network by coercing authenticate from machine accounts and relaying to the certificate service.

JonPSmith/AuthPermissions.AspNetCore

This library provides extra authorization and multi-tenant features to an ASP.NET Core application.

ArthurBrussee/Vapor

Volumetric Fog for Unity

Fydar/RPGCore

RPGCore is a toolkit for producing games and mechanics in C#.

mcintyre321/ValueOf

Deal with Primitive Obsession - define ValueObjects in a single line (of C#).

goblinfactory/konsole

Home of the simple console library consisting of ProgressBar, Window, Form, Draw & MockConsole (C# console progress bar with support for single or multithreaded progress updates) Window is a 100%-ish console compatible window, supporting all normal console writing to a windowed section of the screen, supporting scrolling and clipping of console output.

AvaloniaUI/AvaloniaEdit

Avalonia-based text editor (port of AvalonEdit)

sjh37/EntityFramework-Reverse-POCO-Code-First-Generator

EntityFramework Reverse POCO Code First Generator - Beautifully generated code that is fully customisable. This generator creates code as if you reverse engineered a database and lovingly created the code by hand. It is free to academics (you need a .edu or a .ac email address), not free for commercial use. Obtain your licence from

ChrisDill/Raylib-cs

C# bindings for raylib, a simple and easy-to-use library to learn videogames programming

john-h-k/MathSharp

A vector and matrix library written in C# using hardware intrinsics

benaadams/Ben.BlockingDetector

Blocking Detection for ASP.NET Core

CartBlanche/MonoGame-Samples

All the Samples that work with MonoGame

evilC/AutoHotInterception

An AutoHotkey wrapper for the Interception driver

safakgur/guard

A high-performance, extensible argument validation library.

PwnDexter/SharpEDRChecker

Checks running processes, process metadata, Dlls loaded into your current process and the each DLLs metadata, common install directories, installed services and each service binaries metadata, installed drivers and each drivers metadata, all for the presence of known defensive products such as AV's, EDR's and logging tools.

MiloszKrajewski/K4os.Compression.LZ4

LZ4/LH4HC compression for .NET Standard 1.6/2.0 (formerly known as lz4net)

mrlacey/Rapid-XAML-Toolkit

A collection of tools to accelerate XAML development within Visual Studio. These include XAML analysis, XAML generations, plus templates and helpers.

aloneguid/config

⚙ Config.Net - the easiest configuration framework for .NET developers. No BS.

mikehadlow/AsmSpy

Simple command line assembly reference checker

PacktPublishing/Hands-On-Domain-Driven-Design-with-.NET-Core

Hands-On Domain-Driven Design with .NET Core, published by Packt

andrewlock/NetEscapades.AspNetCore.SecurityHeaders

Small package to allow adding security headers to ASP.NET Core websites

WooshiiDev/HierarchyDecorator

Lightweight Unity Plugin transforming the Hierarchy into what it should be. Adds headers, styles, icons and more.

prom3theu5/aspirational-manifests

Handle deployments of .NET Aspire AppHost Projects

Pickfordmatt/SharpLocker

Elfocrash/clean-minimal-api

A project showcasing how you can build a clean Minimal API using FastEndpoints

eksime/VDesk

Launch programs on new virtual desktops.

JonPSmith/EfCore.GenericServices

A library to help you quickly code CRUD accesses for a web/mobile/desktop application using EF Core.

aloneguid/storage

💿 Storage abstractions with implementations for .NET/.NET Standard

axle-h/Retro.Net

Retro hardware libraries in .NET Core with an Angular front end

RehanSaeed/Schema.NET

Schema.org objects turned into strongly typed C# POCO classes for use in .NET. All classes can be serialized into JSON/JSON-LD and XML, typically used to represent structured data in the head section of html page.

TryCatchLearn/DatingApp-v6

Anatta336/driven-decals

A mesh-based PBR decal system for Unity's universal render pipeline.

BobLd/DocumentLayoutAnalysis

Document Layout Analysis resources repos for development with PdfPig.

aliostad/SuperBenchmarker

Apache Benchmark (ab.exe) on steroids

AvaloniaUI/Avalonia.Samples

Avalonia.Samples aims to provide some minimal samples focusing on a particular issue at a time. This should help getting new users started.

markjprice/cs11dotnet7

Repository for the Packt Publishing book titled "C# 11 and .NET 7 - Modern Cross-Platform Development Fundamentals" by Mark J. Price

ZakKemble/AVRDUDESS

A GUI for AVRDUDE

featurist/coypu

Intuitive, robust browser automation for .Net

markjprice/cs12dotnet8

Repository for the Packt Publishing book titled "C# 12 and .NET 8 - Modern Cross-Platform Development Fundamentals" by Mark J. Price

amakvana/SwitchEmuModDownloader

SwitchEmuModDownloader - A Cross-Platform One-Click Games Mod Downloader for Switch emulators. Formerly YuzuModDownloader.

stevejgordon/CorrelationId

An ASP.NET Core middleware component which synchronises a correlation ID for cross API request logging.

coconauts/startcraft-unity3d

A recreation of the classic RTS game Starcraft by Blizzard, on Unity3D

FlingOS/FlingOS

An educational operating system written in C#. A great stepping stone from high to low level development.