Cross-platform runtime for cloud, mobile, desktop, and IoT apps
SkiaSharp is a cross-platform 2D graphics API for .NET platforms
Command-line shell and scripting language built on .NET
Core functionality needed to create .NET Core projects
A cross-platform UI framework for .NET
.NET MAUI is the .NET Multi-platform App UI
Cross platform code coverage for .NET
Build cross platform desktop apps with ASP.NET Core
Framework to facilitate communication in the Unity game engine
PeachPie, the PHP compiler and runtime for .NET and .NET Core
The .NET MVVM framework for cross-platform solutions
CacheManager is an open source caching abstraction layer for .NET
A free, open-source, and cross-platform big data analytics framework
An advanced, composable, functional reactive model-view-viewmodel
Git + .NET/Mono
Open source and cross-platform machine learning framework for .NET
Orleans is a cross-platform framework for building distributed apps
Ethereum .Net cross platform integration library
A distributed transaction framework that supports multiple languages
AI Multi-Agent Framework in .NET
Cross-platform DICOM implementation
Emgu CV is a cross platform .Net wrapper for OpenCV
Runtime for .NET Core
Avalonia-based .NET Decompiler (port of ILSpy)
UI library that brings the simplicity of native UI development to web