KnifeLemon / Filee

Free, open-source file converter. Convert 255 formats offline by drag & drop — images, PDF, Word, Excel, PowerPoint, HWP/HWPX, video, audio, e-books and archives. No upload, no Office needed.

ShareX / ShareX

ShareX is a free and open-source application that enables users to capture or record any area of their screen with a single keystroke. It also supports uploading images, text, and various file types to a wide range of destinations.

Zaneris / passenger

An open-source IDE for C# and .NET, built with Avalonia, for Windows, macOS and Linux: a Roslyn-powered editor, its own debugger with Hot Reload, a CPU and memory profiler, XAML tooling for Avalonia and WPF, and an MCP server for coding agents.

ralphtradesz / trading-hub

Plataforma de trading gratis y de código abierto para Mac (con guía para portarla a Windows con Claude): footprint, DOM, backtesting anti-sobreoptimización y estrategias con IA. 100 % local.

nota-daw / nota

Nota — a free DAW for macOS, Windows and Linux. No subscription, no account — just open it and make music.

AIDotNet / TKCode.Arc

Arc-style (uiarc.dev) component library for Avalonia, built on AtomUI

wieslawsoltes / FerroUI

Cross-platform UI framework for Rust: styled property system, data binding, XAML, control themes and a composition renderer. A port of Avalonia.

LykosAI / StabilityMatrix

Multi-Platform Package Manager for Stable Diffusion

d2phap / ImageGlass

🏞 A fast, open-source, modern image viewer for 90+ formats – including WEBP, GIF, SVG, AVIF, JXL, HEIC and more – built for smooth browsing across Windows, macOS, and Linux.

AvaloniaUI / Avalonia

Develop Desktop, Embedded, Mobile and WebAssembly apps with C# and XAML. The future of .NET UI

Ruben2776 / PicView

Fast, free and customizable picture viewer

Dailin521 / codex-provider-sync

Synchronize Codex session provider metadata across rollout files and SQLite state.

Sylinko / Everywhere

On-screen aware AI assistant for your desktop. Uses current app context, multiple LLMs, and MCP tools to help you act across apps.

Linsxyx / KugouMusic.NET

基于 .NET 10 与 Avalonia 打造的轻量级跨平台酷狗音乐客户端。

SnapXL / SnapX

SnapX is a free, open-source, cross-platform tool that lets you capture or record any area of your screen and instantly share it with a single keypress. Upload images, videos, text, and more to multiple supported destinations—all with ease. ShareX fork

Loopayeh / pkg-sender

PKG Sender — install PS4/PS5 packages over LAN. Pick games on PC, auto-find the console, queue and install. No USB, no manual IP.

AtomUI / AtomUI

An enhancement and extension library for Avalonia, bringing the Ant Design design language, modern controls, theming, native integrations, and cross-platform UI capabilities to .NET desktop apps.

aprillz / MewUI

A cross-platform and lightweight, code-first .NET GUI framework aimed at NativeAOT.

ClassIsland / ClassIsland

一款功能强、可定制、跨平台，适用于班级多媒体屏幕的课表信息显示工具，可以一目了然地显示各种信息。

ahpxex / Aictionary

Another desktop dictionary, but way more faster and definition-rich, which makes you truly understand language.

Pixeval / Pixeval

Wow. Yet another Pixiv client!

AvaloniaCommunity / Material.Avalonia

Material design in AvaloniaUI

AvaloniaUI / Avalonia.Samples

Avalonia.Samples aims to provide some minimal samples focusing on a particular issue at a time. This should help getting new users started.

PXDiv / Div-Acer-Manager-Max

Div Acer Manager Max is a Linux GUI for Acer laptops using Linuwu Sense drivers. It replicates NitroSense functionality with fan control, performance modes, battery limiter, and more. Built with Avalonia, it offers a clean, easy-to-use interface for managing system performance and cooling.

Bitpainter75 / FerrumPix

FerrumPix is a desktop photo management and editing application for Linux, Windows and macOS.

per-simmons / murmur-youtube

Push-to-talk dictation, on-device. Native macOS (Swift) and Windows (C#/Avalonia), sharing one behavioural contract for the correction dictionary.

irihitech / Ursa.Avalonia

Ursa is an enterprise level UI library for building cross-platform applications with Avalonia UI.

Kindness-Kismet / stelliberty

Stelliberty Remake: A high-performance, visually appealing, and modern cross-platform network client.

AvaloniaUI / AvaloniaEdit

Avalonia-based text editor (port of AvalonEdit)

OutSystems / WebView

Avalonia/WPF control that wraps CefGlue webview control

PixiEditor / PixiEditor

PixiEditor is a Universal Editor for all your 2D needs

roslynpad / roslynpad

Cross-platform C# editor based on Roslyn

kikipoulet / SukiUI

UI Theme for AvaloniaUI

NetSparkleUpdater / NetSparkle

NetSparkle is a C#, cross-platform, highly-configurable software update framework with pre-built UI for .NET developers compatible with .NET 4.6.2/.NET 6+, WinForms, WPF, and Avalonia; uses Ed25519 signatures. View basic usage here in the README and try the samples for yourself.

OpenRakis / Spice86

Reverse engineer and rewrite real mode DOS programs!

reactiveui / Camelotia

A cross-platform sample application built with ReactiveUI. Camelotia is a file manager for cloud storage providers and local file systems, demonstrating reactive MVVM architecture, testable view models and shared code across desktop UI frameworks.

ForNeVeR / AvaloniaRider

JetBrains Rider plugin for Avalonia development

AtomUICommunity / TKCode

A native desktop client for AI coding agents, built with Avalonia and AtomUI. Multi-provider, MCP, integrated terminal, local resumable sessions, NativeAOT.

carlosmozart / PKHeX-Modern

PKHeX Modern: interface moderna do PKHeX (Avalonia) para Windows, Linux, macOS e Android. Modern UI for the PKHeX Pokémon save editor.

reactiveui / ReactiveUI

A composable, cross-platform MVVM framework for .NET inspired by functional reactive programming. It moves mutable state out of the user interface, keeps each feature's logic in one readable place, and makes applications easier to test. Supports WPF, WinForms, WinUI, .NET MAUI, Avalonia, Uno Platform, Blazor and Android.

Caliburn-Micro / Caliburn.Micro

A small, yet powerful framework, designed for building applications across all XAML platforms. Its strong support for MV* patterns will enable you to build your solution quickly, without the need to sacrifice code quality or testability.

irihitech / Semi.Avalonia

Avalonia theme inspired by Semi Design

KirillOsenkov / MSBuildStructuredLog

A logger for MSBuild that records a structured representation of executed targets, tasks, property and item values.

Mapsui / Mapsui

Mapsui is a .NET Map component for: MAUI, Avalonia, Uno Platform, Blazor, WPF, WinUI, Windows Forms, Eto Forms, .NET for Android and .NET for iOS

wieslawsoltes / Dock

A docking layout system.

wieslawsoltes / Core2D

A multi-platform data driven 2D diagram editor.

DevTeam / Pure.DI

Pure DI for .NET

GeneralLibrary / GeneralUpdate

Unlimited Updates, Boundless Upgrades.

ForNeVeR / xaml-math

A collection of .NET libraries for rendering mathematical formulae using the LaTeX typesetting style, for the WPF and Avalonia XAML-based frameworks

AvaloniaUI / Avalonia.Templates

Avalonia Templates for `dotnet new`

alexandrehtrb / Pororoca

An API testing tool with support for HTTP/2 and HTTP/3. Alternative to Postman.

AvaloniaCommunity / Avalonia.Markup.Declarative

Provides helpers for declarative ui in C#

divyviradiya2 / ethertransfer

software to transfer large amount of folders and files between two pc via ethernet cable

deanthecoder / Wolfenshine

A modern C# reimplementation of Wolfenstein 3D.

RoorJiaMo / CobaltFluent

A Windows 11 Fluent control library for Avalonia — 61 controls, zero third-party dependencies, with a control set for industrial HMI applications.

adamdriscoll / iseberg

The PowerShell ISE reimagined with Avalonia and PowerShell 7.

netcrawlerr / CapScroll

CapScroll: An open-source scrolling screenshot and long screenshot capture tool for Linux (WAYLAND + x11) built with .NET and Avalonia UI

MriyaLab / Pysar

Cross-platform report engine for .NET. Describe a paginated document once in .rxaml markup or a fluent C# builder, supply your data, and get a vector PDF, bitmap pages, or an in-app view — rendered by plain .NET on SkiaSharp across Windows, macOS, Linux, Android, iOS and the browser (MAUI, Avalonia, WPF, Blazor). MIT licensed.

Devolutions / devolutions-terminal

Devolutions Terminal - cross-platform Windows Terminal in C# and Avalonia

pricootz / edgepilot

A compact screen-edge system monitor for Windows and Linux, built with Avalonia and .NET.