Orchard Core is an open-source modular and multi-tenant application framework built with ASP.NET Core, and a content management system (CMS) built on top of that framework.
- orchard-cms
- c-sharp
- dotnet-core
- cms
Repository Index
47,133 repositories indexed
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Accept Bitcoin payments. Free, open-source & self-hosted, Bitcoin payment processor.
- bitcoin
- bitcoin-payment-gateway
- lightning-network
- payment-gateway
The Swagger/OpenAPI toolchain for .NET, ASP.NET Core and TypeScript.
OpenCV wrapper for .NET
- opencv
- wrapper
- dotnet
- nuget
ClosedXML is a .NET library for reading, manipulating and writing Excel 2007+ (.xlsx, .xlsm) files. It aims to provide an intuitive and user-friendly interface to dealing with the underlying OpenXML API.
Flexible and versatile OAuth 2.0/OpenID Connect stack for .NET
- openidconnect
- oauth2
- aspnetcore
- dotnet
Umbraco is a free and open source .NET content management system helping you deliver delightful digital experiences.
- umbraco-cms
- cms
- umbraco
- csharp
The high-speed OpenGL, OpenCL, OpenAL, OpenXR, GLFW, SDL, Vulkan, Assimp, WebGPU, and DirectX bindings library your mother warned you about.
A pure C# Open Source QR Code implementation
- qrcode
- c-sharp
- qrcoder-generator
- barcode
inkle's open source scripting language for writing interactive narrative.
An addictive .NET IoC container
- autofac
- ioc-container
- c-sharp
- netcore
Open XML SDK by Microsoft
xUnit.net is a free, open source, community-focused unit testing tool for .NET.
- unit-testing
- xunit
- c-sharp
- dotnet
AI Skills, MCP Tools, and CLI for Unity Engine. Full AI develop and test loop. Use cli for quick setup. Efficient token usage, advanced tools. Any C# method may be turned into a tool by a single line. Works with Claude Code, Gemini, Copilot, Cursor and any other absolutely for free.
- ai
- ai-integration
- game-development
- mcp
Open singing synthesis platform / Open source UTAU successor
- utau
- vocaloid
- music
- singing-synthesis
Assembly scanning and decoration extensions for Microsoft.Extensions.DependencyInjection
- scanning
- decoration
- assembly-scanning
- decoration-extensions
OpenDeepWiki is the open-source version of the DeepWiki project, aiming to provide a powerful knowledge management and collaboration platform. The project is mainly developed using C# and TypeScript, supporting modular design, and is easy to expand and customize.
- chatgpt
- deepwiki
- docs
- fine-tuning
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.
- background-processing
- dotnet
- job-scheduler
- real-time-dashboard
The Open Toolkit library is a fast, low-level C# wrapper for OpenGL, OpenAL & OpenCL. It also includes windowing, mouse, keyboard and joystick input and a robust and fast math library, giving you everything you need to write your own renderer or game engine. OpenTK can be used standalone or inside a GUI on Windows, Linux, Mac.
- c-sharp
- opengl
- opengl-es
- graphics-library
AutoFixture is an open source library for .NET designed to minimize the 'Arrange' phase of your unit tests in order to maximize maintainability. Its primary goal is to allow developers to focus on what is being tested rather than how to setup the test scenario, by making it easier to create object graphs containing test data.
- assertion-library
- assertions
- auto-mocking
- autofixture
Network Analysis Tool
Free open source office suite with business productivity tools: document and project management, CRM, mail aggregator.
- onlyoffice
- collaboration
- dms
- document-management
Free Open Source Enterprise Grade RPA
- rpa
- workflow
- automation
- multiple-robots
Free Open Source Reporting tool for .NET6/.NET Core/.NET Framework that helps your application generate document-like reports
- report
- csharp
- dotnet
- report-generator