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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.
Create a new ContentPage called AirBnBPage.xaml and create a page to imitates the design of the detail view from the AirBnB app with a hero image that extends to the top of the screen. It should scroll and have sample content like the real app. Use the new APIs for SafeArea described here https://github.com/dotnet/maui/issues/28986 and here https://github.com/dotnet/maui/pull/30337 Update the MainPage to be a navigation to sub pages like this new one. We will add more pages in the future
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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.
I wanted to find a framework that already had all the Boiler code needed for a business application: menus, sections, graphs, users, etc. While searching for such a framework, we noticed the .Net frameworks https://aspnetboilerplate.com and https://abp.io, which already have a lot of things "out of the box". As far as I understand, both frameworks are being developed either by related teams, or even by one team. And the teams are from Turkey. The ASP.NET Boilerplate framework has legacy code from older versions of the .Net Framework. The newer ABP framework does not have legacy, it is on .Net Core. Both frameworks have a decent number of stars on github.
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I wanted to find a framework that already had all the Boiler code needed for a business application: menus, sections, graphs, users, etc. While searching for such a framework, we noticed the .Net frameworks https://aspnetboilerplate.com and https://abp.io, which already have a lot of things "out of the box". As far as I understand, both frameworks are being developed either by related teams, or even by one team. And the teams are from Turkey. The ASP.NET Boilerplate framework has legacy code from older versions of the .Net Framework. The newer ABP framework does not have legacy, it is on .Net Core. Both frameworks have a decent number of stars on github.
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Project mention: The Windows Subsystem for Linux is now open source | news.ycombinator.com | 2025-05-19
> whereas Microsoft is actively sabotaging wine
Do you have a link to where I can read more about this? My understanding is that Microsoft saw Wine as inconsequential to their business, even offloading the Mono runtime to them [1] when they dropped support for it.
[1] https://www.mono-project.com/
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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!!
Project mention: .NET 10 Preview 6 brings JIT improvements, one-shot tool execution | news.ycombinator.com | 2025-07-30 -
DotNetty
DotNetty project – a port of netty, event-driven asynchronous network application framework
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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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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spec-coding-mcp
Transform feature ideas into production-ready code through systematic Spec-Driven Development 通过系统化的**规格驱动开发**，将功能想法转化为可投入生产的代码
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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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You do it wrong! Customizing ABP Login Page Correctly
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Deprecation of ListView in .NET MAUI
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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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A note from our sponsor - SaaSHub
www.saashub.com | 31 Aug 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) | 22,946 |
| 2 | ABP | 13,746 |
| 3 | ASP.NET Boilerplate | 11,947 |
| 4 | Mono | 11,357 |
| 5 | Orleans | 10,476 |
| 6 | Uno Platform | 9,581 |
| 7 | DotNetty | 4,174 |
| 8 | Fusion | 1,885 |
| 9 | AspectCore Framework | 1,737 |
| 10 | Microdot Framework | 1,543 |
| 11 | CSLA .NET | 1,314 |
| 12 | Kentor Authentication Services | 996 |
| 13 | X.PagedList | 930 |
| 14 | Spring.Net | 871 |
| 15 | ASP.NET MVC Boilerplate Framework | 721 |
| 16 | peasy | 515 |
| 17 | silky | 281 |
| 18 | Newbe.Claptrap | 216 |
| 19 | formcms | 215 |
| 20 | Plastic | 61 |
| 21 | HopFramework | 47 |
| 22 | PersianDataAnnotations | 44 |
| 23 | spec-coding-mcp | 27 |
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