Open-source alternatives to Winforms

WinUI Gallery is a comprehensive reference application and component showcase for the Windows desktop platform. It provides a collection of interactive examples and reusable interface patterns designed to demonstrate the implementation of native controls and layout structures within Windows applications. The project serves as a practical guide for applying the Fluent Design System, offering a centralized resource for developers to explore how to build consistent, accessible, and responsive user interfaces. By providing both visual demonstrations and the underlying code, it illustrates how to

pywin32 is a collection of Python extensions that serve as a wrapper for the native Windows API, enabling the invocation of operating system functions to manage low-level system resources and hardware. It provides a core library for interacting with Component Object Model objects to automate native desktop applications, a framework for constructing native Windows GUI applications, and an interface for registering and running Python scripts as background system services. The project distinguishes itself by providing deep integration with the Windows environment, including the ability to bind P

Backbone is a JavaScript MVC framework and client-side data orchestrator used to structure web applications. It functions as an event-driven UI library and RESTful state manager that synchronizes data models with remote JSON interfaces to maintain consistent application state. The framework coordinates communication between application components through a decoupled event system. It binds data updates directly to the document object model, ensuring that the user interface remains synchronized with the underlying state. It provides tools for frontend data organization, allowing developers to

radzen-blazor is a UI component library for Blazor applications, providing a collection of native interface elements including data grids, charts, and scheduling components. It includes a data visualization suite for rendering complex datasets through interactive charts and heatmaps, alongside responsive web layout tools to ensure interfaces adapt to different screen sizes and orientations. The library offers multiple design system implementations, including a Fluent UI framework and a Material Design UI kit. Visual customization is supported through dynamic theme customization and brand conf

ModernWpf is a UI framework and control toolkit for the Windows Presentation Foundation framework. It provides a collection of modern styles and specialized interface elements designed to build current-generation desktop application layouts. The library functions as a theme and XAML styling system that allows for the updating of standard interface elements. It includes built-in support for managing visual themes, specifically enabling the switch between light, dark, and high contrast modes. The project covers general WPF user interface design, including the implementation of styled input, na

wil is a C++ wrapper library for the Windows API designed to simplify system development through RAII and exception handling. It provides a set of resource management tools, a framework for Windows error handling, and type-safe interfaces for registry access and networking. The library distinguishes itself by automating the conversion between system error codes and C++ exceptions, while providing utilities for contextual error message attachment and early return patterns. It also features specialized networking wrappers for socket initialization and hostname resolution, and a registry interfa

Native Windows GUI is a lightweight graphical user interface toolkit and application framework designed for building native desktop software in the Rust programming language. It directly wraps the underlying operating system windowing application programming interface to construct interface elements without intermediate frameworks, utilizing standard operating system controls and programming interfaces. The framework supports cross-compilation toolchains that enable developers to compile native Windows target applications and binaries directly from non-Windows environments like Linux. It incl

TAICHI-flet is an AI-integrated resource browser and Windows desktop application built with Flet. It serves as a centralized multimedia hub and web content aggregator designed to combine artificial intelligence utilities with tools for searching and accessing movies, music, and software. The application enables the aggregation of resources from multiple sources, including cloud storage drives and external web addresses. It provides specialized tools for streaming and downloading anime and music, reading online novels with text-to-speech playback, and automating operations on the Windows opera

The Windows App SDK is a set of APIs and UI frameworks for building native Windows desktop applications. It provides a Windows Runtime API for accessing system capabilities and a dedicated UI framework for creating responsive, accessible interfaces. The project also functions as a desktop app deployment framework and a local AI execution environment for running hardware-accelerated models on CPUs, GPUs, and NPUs. The SDK distinguishes itself by enabling the modernization of legacy applications, allowing developers to embed modern controls and platform features into existing projects without a

Duilib is a Windows UI library and custom rendering engine designed for building high-performance graphical user interfaces for PC client software. It functions as a DirectUI framework that allows for the creation of bespoke layouts and tailored interface elements without relying on standard operating system controls. The framework implements a direct user interface approach to render custom graphical elements. This allows for the design of non-standard visual layouts for desktop applications, including those that require high-performance rendering for resource-heavy software. The system cov

Phoenix is a comprehensive web development suite that provides a browser-based code editor, an AI-powered coding assistant, and a live web previewer. It integrates a visual Markdown document editor and a web-based Git client, allowing users to write and manage HTML, CSS, and JavaScript across different devices and platforms. The environment features a visual UI design system that maps canvas manipulations directly to code and enables in-place CSS editing. It supports real-time change previews and responsive layout testing across multiple device breakpoints to verify rendering on phones, table

Darwinkit is a Cgo interop layer and library of native bindings that allows Go applications to call Apple frameworks and system APIs. It functions as a bridge between the Go runtime and native C-compatible symbols to facilitate macOS system programming and native application development. The project includes an Objective-C binding generator that scans system symbol databases to produce Go source code and constants. This tool enables the inspection of framework symbols and the management of binding modules to maintain current interfaces with native frameworks. The library provides a memory ma

PyQt is a cross-platform GUI toolkit and desktop UI framework that provides Python bindings for the Qt framework. It serves as a widget library for creating graphical user interfaces that maintain consistent behavior and appearance across Windows, macOS, and Linux. The framework enables the development of desktop applications through a collection of pre-built interface components and layout managers. It supports the creation of specialized interface elements with custom styling, window animations, and the integration of web browser components to load and execute scripts alongside native eleme

JSPatch is a JavaScript native bridge and method swizzler that allows for the dynamic injection of logic into a hosted native environment. It functions as a cross-language data mapper and execution engine, enabling the replacement of native function pointers with JavaScript wrappers to modify application behavior at runtime. The project provides the ability to perform runtime application patching by overriding native class methods and object properties. This allows for the modification of application logic and the application of hotfixes using JavaScript code loaded from local files or remote

This project is a general purpose library for the .NET ecosystem, providing a collection of reusable helper methods and APIs for common programming tasks. It encompasses a UI component library for cross-platform development, a toolkit for MVVM architecture, and specialized utilities for memory management and native interoperability. The library distinguishes itself through high-performance memory abstractions, such as pooled buffers and contiguous two-dimensional memory spans, designed to reduce garbage collection pressure. It also provides native interop wrappers and bindings to facilitate d

Flight is a JavaScript component framework and DOM interactivity library used to map behavioral logic to HTML nodes. It provides an event-driven architecture for building modular user interface elements and managing web application interactivity. The library distinguishes itself through a mixin-based system for injecting reusable functions and properties into components, promoting code reuse without rigid inheritance. It further enables behavior modification via function hooking, allowing developers to wrap existing methods to inject custom logic without altering the original source code. Th

OffensiveRust is a red team toolkit and malware development kit written in Rust. It serves as an evasion framework and post-exploitation library, providing a collection of offensive security primitives and a Windows API wrapper for interacting with low-level system functions and undocumented APIs. The project focuses on bypassing security software through direct system calls, memory obfuscation, and stealthy payload execution. It implements techniques to defeat static binary analysis via compile-time string encryption and payload obfuscation, while avoiding detection using parent process ID s

Square-ui is a component-based UI library and admin dashboard framework designed for building data-dense management interfaces. It provides a toolkit of reusable UI primitives and data visualization elements, such as kanban boards, heatmaps, and financial charts, to assemble internal tools and operational dashboards. The framework is distinguished by an event-driven UI architecture that utilizes a centralized event bus to synchronize real-time operational data across decoupled functional domains. It employs a constraint-based responsive grid system to organize widgets and manage data density

Walk is a comprehensive framework for building native Windows desktop applications. It functions as a GUI library and Windows API wrapper, providing a toolkit of native widgets and a declarative layout system for developing high-performance user interfaces. The project is distinguished by its data-binding framework, which uses reflection and string-based property paths to synchronize data sources with interface widgets. It also provides specialized support for high-DPI interface scaling and an optimized native message loop to reduce runtime overhead. The toolkit covers a wide range of capabi

Druid is a native user interface toolkit and 2D graphics engine for the Rust programming language. It functions as a retained-mode, data-driven framework for building graphical user interfaces that run across Linux, macOS, and web browsers via WebAssembly. The toolkit distinguishes itself through a data-first approach to UI design, utilizing lenses to isolate subsets of global application state and synchronize them with specific widgets. This allows the visual layout to update automatically when the underlying data model changes. Its capability surface includes a constraint-based box layout

This project is a full-stack development framework and no-code web app builder designed to automate the creation of network interfaces and API documentation. It serves as a system for building full-stack web applications by connecting a visual frontend editor to server-side logic. The platform functions as a polyglot backend integrator and orchestrator, using a unified communication layer to connect frontend components to server-side logic written in multiple different programming languages. It employs a shared object model to maintain synchronization between the client and server, automatica

This project is an AI-powered resume builder and JSON-based document editor used for creating professional curriculum vitaes. It combines a template-driven design tool with a multi-format document exporter to convert digital resumes into high-definition PDF, image, Markdown, and raw data formats. The system utilizes JSON schemas to define and render structured resume components and layouts. It integrates artificial intelligence to generate, polish, and translate resume text, and provides quality analysis to identify profile weaknesses and suggest optimizations. The platform covers visual doc

Scala Native is an ahead-of-time compiler that transforms Scala source code into standalone native binaries for direct execution on hardware. It provides a native binary toolchain designed to eliminate virtual machine warm-up times and ensure instant startup by compiling code into optimized executables. The project features a C interoperability interface and foreign function interface that map native C headers to language objects, allowing for the direct execution of external libraries. It includes a low-level memory manager that supports direct pointer manipulation and the use of structs for

OpenCVSharp is a .NET library that wraps native OpenCV functions, providing C# developers with access to OpenCV's computer vision capabilities through an API that mirrors the native C/C++ style. It serves as a managed wrapper for image processing, feature detection, object detection, and image manipulation tasks, while also handling automatic disposal of unmanaged OpenCV resources like Mat objects to prevent memory leaks in .NET applications. The library enables keypoint detection and descriptor extraction using algorithms such as AKAZE, BRISK, or FAST, with brute-force or FLANN-based matchin

Dev-Cpp is a comprehensive development suite that serves as a C++ integrated development environment, a cross-platform application builder, and a visual UI designer. It provides a toolchain for writing, compiling, and debugging native C++ applications on Windows, while offering a framework to create native binaries for desktop, mobile, and IoT devices from a single codebase. The project distinguishes itself by integrating an embedded SQL database engine and a REST API development platform directly into the workflow. It includes an AI-assisted coding tool that leverages large language models t

tmagic-editor is a low-code development platform and visual page builder used for designing frontend user interfaces through a visual canvas and component library. It functions as a frontend UI orchestrator that defines page structures and a schema-driven form generator that interprets structured data to create interactive user forms. The system employs a cross-framework component adapter to ensure consistent rendering across different frontend environments. It uses visual-to-JSON layout serialization to translate interface movements into persistent structured data, which is then processed by

The Windows Community Toolkit is a development toolkit and WinUI component library for building applications on Windows 10 and 11. It functions as a Windows API wrapper and a collection of reusable UI components and utility functions designed to simplify common programming tasks. The project focuses on reducing boilerplate code in C# Windows development by providing a set of utility functions and standardized services. It enables the implementation of standard user interface patterns through custom controls and layout helpers. The library covers a broad range of capabilities, including Windo