Top DOTNET GitHub Repositories & Tools (2026)

A free, open-source Windows desktop organizer with native-feeling WinUI 3 widgets.

Flight booking system built as .NET 10 microservices with Vertical Slice Architecture, DDD, CQRS, Event Sourcing, gRPC, RabbitMQ, Wolverine, PostgreSQL, MongoDB and .NET Aspire.

The Free Software Media System - Server Backend & API

A modern file manager that helps users organize their files and folders.

Free and open-source PDF editor for Windows with a built-in PDF 2.0 engine. View, annotate, OCR, merge, split, crop, rotate, compare, edit text, draw, sign, fill forms, print, flatten, and open password-protected PDFs without a subscription.

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

C# application with primary purpose of farming Steam cards from multiple accounts simultaneously.

PKG Sender — install PS4/PS5 packages over LAN. Pick games on PC, auto-find the console, queue and install. No USB, no manual IP.

Installer and automatic update framework for cross-platform desktop applications

Source 2 Viewer is an all-in-one tool to browse VPK archives, view, extract, and decompile Source 2 assets, including maps, models, materials, textures, sounds, and more.

Pile graphique des jeux : DLSS 5, Multi Frame Generation, HDR RenoDX et ReShade - installes en un clic, verifies, retirables en un clic.

A browser automation framework and ecosystem.

.NET Decompiler with support for PDB generation, ReadyToRun, Metadata (&more) - cross-platform!

Pulumi - Infrastructure as Code in any programming language 🚀

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

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.

ASP.NET Boilerplate - Web Application Framework

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

A composable, cross-platform MVVM framework for .NET inspired by functional reactive programming. It moves mutable state out of the user interface, keeps each feature's logic in one readable place, and makes applications easier to test. Supports WPF, WinForms, WinUI, .NET MAUI, Avalonia, Uno Platform, Blazor and Android.

Distributed Application Framework for .NET