Open source
ASP.NET Core
Open source web framework for C# apps, APIs and interactive pages
Backend FrameworksMicrosoft's web framework
3 tools in our directory are marked as best for .NET teams, from 3 sections: AI Agents & Assistants (1), Frameworks (1) and Mobile Development (1).

Open source web framework for C# apps, APIs and interactive pages

Cross-platform .NET UI framework with one XAML codebase

Microsoft SDK for AI agents in C#, Python and Java
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