Open source dotnet projects
Every project in the registry tagged dotnet, ranked by real GitHub adoption.
Self-hosted media server for movies, music, and more
Develop Desktop, Embedded, Mobile and WebAssembly apps with C# and XAML. The future of .NET UI
Infrastructure as code in your favorite language
Secure password management for individuals and businesses
Free, open-source framework for cross-platform game development
A framework for building, orchestrating and deploying AI agents and multi-agent workflows with support for Python and .NET.
.NET API Gateway
The Swagger/OpenAPI toolchain for .NET, ASP.NET Core and TypeScript.
NLog - Flexible and Structured Logging for various .NET Platforms
Static site generator for .NET API documentation.
A simple, cross platform, modulith ecommerce system built on .NET
:cake: Cake (C# Make) is a cross platform build automation system.
Privacy-first password manager with built-in email aliasing. Fully encrypted and self-hostable.
Free Open Source Reporting tool for .NET6/.NET Core/.NET Framework that helps your application generate document-like reports
Open-source feature flag management for seamless deployments
WireMock.Net is a flexible product for stubbing and mocking web HTTP responses using advanced request matching and response templating. Based on WireMock Java,
A modular, scalable and ultra-fast open-source all-in-one eCommerce platform built on ASP.NET Core 10
OpenBudgeteer is a budgeting app based on the Bucket Budgeting Principle
🚀 A future-proof enterprise web CMS supporting both headless and decoupled approaches. Build any type of app with customizable APIs on ASP.NET Core/.NET Core.
Windows Event Log tooling for PowerShell and .NET: typed queries, reporting, export, WEC, automation, and the PSEventViewer module.
Community-driven platform built for transparency
Related tags
Frequently asked questions
How many open source dotnet projects are there?
This registry tracks 21 projects tagged dotnet, with 212,588 GitHub stars between them. The most-adopted is Jellyfin at 57,244 stars.
Are these dotnet projects free to use?
Yes — 19 of the 21 carry an explicit open-source licence across 5 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which dotnet project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these dotnet projects still maintained?
18 of the 21 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.