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Top 23 C# Android Projects
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Avalonia
Develop Desktop, Embedded, Mobile and WebAssembly apps with C# and XAML. The future of .NET UI
> I like WASM and I want to like WASM but the rate of maturity within the ecosystem is incredibly abysmal.
The C# toolchain for WebAssembly is pretty good. You can do a lot with Avalonia and Uno:
https://avaloniaui.net/
https://platform.uno/
Here's a C# clone of Visual Basic compiled to WebAssembly:
https://bandysc.github.io/AvaloniaVisualBasic6/
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ReSharper
ReSharper is now available in VS Code and Cursor. ReSharper brings a professional toolset for C# developers backed by over 20 years of experience, enterprise-grade security, SOC 2 compliance, and the trust of companies worldwide.
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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.
Project mention: Ask HN: What Is the State of App Development in 2026? | news.ycombinator.com | 2026-05-30 -
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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!!
> I like WASM and I want to like WASM but the rate of maturity within the ecosystem is incredibly abysmal.
The C# toolchain for WebAssembly is pretty good. You can do a lot with Avalonia and Uno:
https://avaloniaui.net/
https://platform.uno/
Here's a C# clone of Visual Basic compiled to WebAssembly:
https://bandysc.github.io/AvaloniaVisualBasic6/
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ReactiveUI
An advanced, composable, functional reactive model-view-viewmodel framework for all .NET platforms that is inspired by functional reactive programming. ReactiveUI allows you to abstract mutable state away from your user interfaces, express the idea around a feature in one readable place and improve the testability of your application.
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SkiaSharp
SkiaSharp is a cross-platform 2D graphics API for .NET platforms based on Google's Skia Graphics Library. It provides a comprehensive 2D API that can be used across mobile, server and desktop models to render images.
If you've read any of the other articles this month, you've likely seen SkiaSharp mentioned already. While drawing and text aren't usually a combination I consider, I figured it was worth a shot. I asked Copilot first for an analysis of what the improvement might be along with a plan.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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Fortunately, I mostly avoided ever becoming "Googled" to start with.
The solution to most 2FA issues (including the one described here) is Stratum.
https://stratumauth.com/
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MVVMCross
The .NET MVVM framework for cross-platform solutions, including Android, iOS, MacCatalyst, macOS, tvOS, WPF, WinUI
Project mention: Unity's Mono problem: Why your C# code runs slower than it should | news.ycombinator.com | 2025-12-28I’ve been building this way since 2018 using MvvmCross[0] and it's become much less painful with LLMs where you can simply ask to recreate an iOS UI on Android. I even managed to implement experimental hot reload[1] for native UIs on Android from .NET, but ended up not using it because, again, nowadays it's faster to iterate with Claude Code – it just one-shot things most of the time.
Currently I'm building an app with Uno Platform, which is basically .NET Flutter, and while it's cool to get things working across five different platforms at once, you can note the difference, especially on scroll. No automatic Liquid Glass / Material 3 for it either.
So it's a choose your poison situation: either building native interfaces on each platform separately, or fighting later with an additional layer of abstraction and a canvas-based UI wheel reinvention.
[0]: https://github.com/MvvmCross/MvvmCross
[1]: https://github.com/ivmirx/HotDemo
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Maui
The .NET MAUI Community Toolkit is a community-created library that contains .NET MAUI Extensions, Advanced UI/UX Controls, and Behaviors to help make your life as a .NET MAUI developer easier (by CommunityToolkit)
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shiny
.NET Framework for Backgrounding & Device Hardware Services (iOS, MacCatalyst, Android, & Windows)
Project mention: How to Alienate Your Users: A guide for responding to open source help requests | news.ycombinator.com | 2025-08-10This post is """inspired""" by an experience the author had with a github maintainer. The github issue: https://github.com/shinyorg/shiny/issues/1533
The maintainer was respectful and helpful. They responded the same day the issue was made and diagnosed and explained the issue without even receiving a proper reproducible build link. They then answered follow up questions. What an amazing maintainer!
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Macro-Deck
Macro Deck transforms your phone, tablet, or any device equipped with a modern internet browser into an efficient remote macro pad. With this tool, you can execute single or multi-step actions seamlessly with just a single tap.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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# Android discussion
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How I Teach LLMs to Play BattleTech (Part 1): Architecture, Agents, and Tools
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Modernizing Legacy Apps with AI
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Join the AI Challenge for Cross-Platform Apps: $3,000 in Prizes!
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.NET MAUI Is Coming to Linux and the Browser, Powered by Avalonia
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Svelte Is That Fast
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AI Dev: Testing Kiro
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A note from our sponsor - ReSharper
www.jetbrains.com | 14 Jun 2026
Index
What are some of the best open-source Android projects in C#? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | Avalonia | 30,975 |
| 2 | Introducing .NET Multi-platform App UI (MAUI) | 23,268 |
| 3 | Mono | 11,440 |
| 4 | Uno Platform | 9,961 |
| 5 | ReactiveUI | 8,497 |
| 6 | keepass2android | 6,042 |
| 7 | SkiaSharp | 5,435 |
| 8 | app | 4,474 |
| 9 | MVVMCross | 3,917 |
| 10 | Maui | 2,678 |
| 11 | Sefirah | 2,486 |
| 12 | Microcharts | 2,076 |
| 13 | AdaptiveCards | 1,955 |
| 14 | balatro-mobile-maker | 1,659 |
| 15 | APK-Installer | 1,652 |
| 16 | shiny | 1,565 |
| 17 | glTFast | 1,466 |
| 18 | Macro-Deck | 1,393 |
| 19 | LottieXamarin | 1,219 |
| 20 | Rg.Plugins.Popup | 1,142 |
| 21 | AvillaForensics | 1,072 |
| 22 | 32feet | 981 |
| 23 | ediabaslib | 866 |
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ReSharper brings a professional toolset for C# developers backed by over 20 years of experience, enterprise-grade security, SOC 2 compliance, and the trust of companies worldwide.
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