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Top 23 C# Application Framework Projects
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Introducing .NET Multi-platform App UI (MAUI)
.NET MAUI is the .NET Multi-platform App UI, a framework for building native device applications spanning mobile, tablet, and desktop.
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ABP
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.
Project mention: Open-source web application framework for ASP.NET Core | news.ycombinator.com | 2024-09-28What is going on with all the .zip files in git? https://github.com/abpframework/abp/blob/8.3.1/source-code/V...
Bonus points for having them twice: https://github.com/abpframework/abp/blob/8.3.1/studio/source...
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So "mono.dll" exports a few symbols which we can use in our DLL. You can get the C++ SDK from here: Mono SDK On Github
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Project mention: Ergo: Erlang-inspired event driven actor framework in Go | news.ycombinator.com | 2024-09-12
No per-process GC (still very configurable unlike the one here) but for hot-reload, if you don't mind completely different language, there are https://github.com/akkadotnet/akka.net and https://github.com/dotnet/orleans
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Uno Platform
Open-source platform for building cross-platform native Mobile, Web, Desktop and Embedded apps quickly. Create rich, C#/XAML, single-codebase apps from any IDE. Hot Reload included! 90m+ NuGet Downloads!!
As-is today, AI tools provide some productivity gains. However, they are not replacements for experienced developers. At Uno Platform we are investing in tools which make developers productive within their current environments, such as Hot Design. Also, we are keeping a close eye and thinking of these useful scenarios to apply AI to, as we don’t believe just adding a simple LLM to it will actually add value. So, stay tuned to our blogs and Dev.to account as there is more goodness coming on this topic.
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DotNetty
DotNetty project – a port of netty, event-driven asynchronous network application framework
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Fusion
Build real-time apps (Blazor included) with less than 1% of extra code responsible for real-time updates. Host 10-1000x faster APIs relying on transparent and nearly 100% consistent caching. We call it DREAM, or Distributed REActive Memoization, and it's here to turn real-time on!
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silky
The Silky framework is designed to help developers quickly build a microservice development framework through simple code and configuration under the .net platform.
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Newbe.Claptrap
This is a frameworks with reactive, event sourcing and Actor pattern as basic theories. On top of this, developers can create "distributed", "scale out", and "easy to test" application more simply. Claptrap and it`s Minions is on the way.
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FormCMS
Open-source headless CMS built with ASP.NET Core (C#) and React, featuring REST APIs, GraphQL, and a GrapesJS page designer.
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Plastic
This project provides encapsulation of things like Domain, Application Rules, Business Rules or Business Logic in Application. (by sang-hyeon)
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PersianDataAnnotations
PersianDataAnnotations is ASP.NET Core MVC & ASP.NET MVC Custom Localization DataAnnotations (Localized MVC Errors) for Persian(Farsi) language - فارسی سازی خطاهای اعتبارسنجی توکار ام.وی.سی. و کور.ام.وی.سی. برای نمایش اعتبار سنجی سمت کلاینت
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Simplify.Web
Simplify.Web is an open-source, lightweight, fast and highly customizable server-side .NET web-framework based on ASP.NET Core for building HTTP based web-applications, RESTful APIs etc.
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
C# Application Frameworks discussion
C# Application Frameworks related posts
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MAUI is a scam
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Any devs actually getting a leg up using AI tools?
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CodeMash 2025
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Maui multi-platform App UI framework for mobile and desktop
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Unity Game Hacking - Calling FindObjectsOfType in C++
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Open-source web application framework for ASP.NET Core
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Visual Studio vs. Visual Studio Code: An In-depth Comparison
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A note from our sponsor - SaaSHub
www.saashub.com | 25 Mar 2025
Index
What are some of the best open-source Application Framework projects in C#? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | Introducing .NET Multi-platform App UI (MAUI) | 22,530 |
| 2 | ABP | 13,305 |
| 3 | ASP.NET Boilerplate | 11,896 |
| 4 | Mono | 11,224 |
| 5 | Orleans | 10,315 |
| 6 | Uno Platform | 9,280 |
| 7 | DotNetty | 4,132 |
| 8 | Fusion | 1,864 |
| 9 | AspectCore Framework | 1,714 |
| 10 | Microdot Framework | 1,542 |
| 11 | CSLA .NET | 1,294 |
| 12 | Kentor Authentication Services | 978 |
| 13 | X.PagedList | 921 |
| 14 | Spring.Net | 857 |
| 15 | ASP.NET MVC Boilerplate Framework | 725 |
| 16 | peasy | 512 |
| 17 | silky | 279 |
| 18 | Newbe.Claptrap | 216 |
| 19 | FormCMS | 173 |
| 20 | Plastic | 61 |
| 21 | HopFramework | 48 |
| 22 | PersianDataAnnotations | 44 |
| 23 | Simplify.Web | 21 |
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