30 open-source projects similar to imgui-rs/imgui-rs, ranked by shared indexed features. Tags may describe platforms or build tools rather than the same primary purpose. Check each project’s use case, license, and deployment requirements before treating it as a replacement.
Nuklear is a portable, header-only immediate mode graphical user interface library written in C. It is designed to function as a lightweight framework for creating interfaces that render directly to hardware, making it suitable for integration into custom graphics engines, embedded systems, and resource-constrained environments. The library operates by generating abstract draw commands that are converted into vertex buffers, allowing for hardware-accelerated rendering through standard graphics APIs. By utilizing an immediate mode approach, the interface state is defined and updated within the
Ratatui is a Rust framework and cross-platform terminal renderer used to build rich terminal user interfaces. It functions as a toolkit for creating interactive command-line displays, dashboards, and data visualizations. The library employs an immediate mode rendering approach, where the interface is redrawn every frame based on the current application state. It uses a widget-based layout system to compose complex text-based interfaces. The framework includes a rectangle-based layout engine and a backend-agnostic drawing system to decouple UI logic from specific terminal emulators. It furthe
Macroquad is a Rust game engine and 2D graphics library designed for developing cross-platform games and graphical applications. It functions as a rendering engine that enables the deployment of a single codebase to desktop, mobile, and web targets. The engine utilizes an immediate mode rendering model, which allows for the creation of user interfaces and game worlds that render in a single pass within the main application loop. This approach is paired with hardware-accelerated 2D rendering and automatic draw call batching to optimize the display of geometry across different hardware devices.
Nuklear is a minimal, header-only graphical user interface toolkit written in C. It utilizes an immediate-mode rendering model, where the interface is reconstructed and drawn directly within the application loop each frame. This approach eliminates the need for persistent widget state or complex synchronization between the interface and underlying application data. The library is designed for portability and integration into resource-constrained environments. It requires the host application to manage memory manually, allowing it to function in systems that lack standard library support. By d
DearPyGui is a GPU-accelerated, immediate-mode graphical user interface framework for Python. It provides a high-performance toolkit for building interactive desktop applications by leveraging native hardware-accelerated rendering backends across multiple operating systems. By utilizing an immediate-mode execution model, the library offers direct control over the rendering loop and element state, enabling the creation of responsive, dynamic interfaces. The framework distinguishes itself through its ability to handle complex, high-frequency visual updates, making it suitable for real-time data
gdext provides a set of language bindings for writing high-performance native game logic in Rust for the Godot 4 engine. It serves as a framework for creating native engine extensions and custom classes via the GDExtension library, allowing developers to extend core engine functionality without recompiling the engine source code. The project includes a dedicated Rust WebAssembly toolchain to compile native logic into modules for execution in web browsers. This system supports WebAssembly-compatible compilation with specific configurations for web threading and module debugging. The toolkit c
Clay is a header-only layout engine designed for C and C++ applications that computes element positions and dimensions using a declarative box model. By operating as an immediate-mode framework, it calculates interface geometry dynamically on every frame, allowing for the creation of responsive and fluid user interfaces without maintaining persistent state. The library functions as a platform-agnostic tool that decouples layout logic from specific graphics backends. It provides a flexible coordinate system that supports layered elements, such as modals and tooltips, alongside standard documen
nanogui is a native C++ toolkit for rendering interactive user interface components directly within an OpenGL graphics context. It functions as a cross-platform widget library and immediate-mode framework used to create windows, buttons, sliders, and input fields. The toolkit provides specialized capabilities for building technical interfaces, including real-time parameter control panels and custom tooling for graphics-heavy software. It ensures visual consistency across different operating systems and screen resolutions through DPI-aware coordinate scaling. The framework includes a constrai
Sokol is a C hardware abstraction layer and cross-platform graphics library designed for managing windowing, input, and audio across different operating systems. It functions as a GPU resource manager and multimedia application framework, providing a unified API for rendering 2D and 3D graphics across WebGL, Metal, Direct3D, and OpenGL. The project is distinguished by its single-header implementation, which simplifies integration and portability. It utilizes a stateless render pass definition and a one-update-per-frame model to synchronize CPU data to GPU memory and manage resource lifecycles
Leif is an OpenGL-backed immediate mode graphical user interface library and graphics rendering framework. It provides a lightweight control flow where layouts and components are rebuilt every frame without retaining an internal scene graph, backed by hardware-accelerated graphics. The framework utilizes GPU-accelerated batch rendering to draw high volumes of primitives efficiently by grouping geometry into single vertex buffers. Developers can bypass standard rendering wrappers to access the underlying renderer directly, drawing raw graphics and custom geometry alongside standard interface c
This library is an immediate mode graphical user interface toolkit that reconstructs the entire interface every frame. By executing procedural code within a high-frequency loop that matches the display refresh rate, it allows developers to define interactive elements and state updates directly. The framework utilizes a multi-pass rendering approach to resolve layout dependencies, ensuring that widget sizes and positions are calculated accurately before final placement to prevent visual jitter. The project functions as a cross-platform graphics toolkit, providing a portable rendering layer tha
This project is a cross-platform library designed for desktop application development, providing a unified interface for window management, input handling, and hardware-accelerated graphics. It serves as a foundational framework that abstracts platform-specific windowing protocols and graphics APIs, enabling developers to create interactive software that functions consistently across Windows, macOS, and Linux. The library distinguishes itself by providing deep integration with low-level graphics APIs, specifically OpenGL and Vulkan. It manages the complexities of graphics context initializati
This project is a cross-platform library for building desktop applications using Deno. It enables developers to create software with web-based user interfaces by rendering HTML, CSS, and JavaScript within native desktop windows. The framework functions as a bridge between the web-based frontend and the host operating system. It provides a communication layer that allows for bidirectional data exchange and code execution between the interface and the underlying system. By integrating with native system event queues, the library maintains window responsiveness and manages the application lifecy
LCUI is a component-based, cross-platform UI toolkit for building desktop applications using C, TypeScript, and JSX. It provides a declarative UI compiler that transforms JSX and TypeScript markup into native C code, enabling developers to construct interfaces without a browser runtime. The library includes a CSS styling engine that applies standard CSS rules to layout and style native desktop components, and supports component composition with state management and event binding. The toolkit distinguishes itself by combining web development patterns with native desktop rendering, allowing dev
Leafer UI is a high-performance HTML5 canvas rendering engine and 2D vector graphics library. It utilizes a hierarchical scene tree to manage shapes, paths, and text, providing a toolkit for building interactive canvas applications and expansive infinite canvases. The engine is designed as a cross-platform canvas toolkit that decouples core logic from the drawing API, allowing it to run across web, mobile, server, and mini-program environments. It distinguishes itself by providing specialized tools for interactive graphic editor development, including hit detection, event bubbling, and transf
This project is a technical guide and implementation library for advanced visual effects and hardware-accelerated animations using the Core Animation framework on iOS. It provides a comprehensive reference for creating high-performance motion graphics, custom graphic rendering, and the construction of 3D engines using perspective transforms and Z-axis manipulation. The collection distinguishes itself through a deep focus on GPU rendering optimization and graphics performance. It covers advanced strategies to maintain high frame rates, such as reducing offscreen rendering via shadow path optim
cnc-ddraw is a DirectDraw wrapper and emulation layer designed to ensure legacy 2D graphics software runs on modern operating systems. It functions as a compatibility layer that intercepts legacy API calls and redirects them to a modern rendering backend to prevent crashes and black screens. The project provides a 2D graphics upscaler that uses shaders to increase the resolution of low-fidelity visuals for high-definition screens. It also includes a frame rate controller to synchronize frame timing and limit output speed, which prevents stuttering and performance drops. The tool manages disp
LibGDX is a Java-based framework designed for cross-platform game development, enabling the creation and deployment of 2D and 3D games across desktop, mobile, and web environments from a single codebase. It functions as a comprehensive library that abstracts hardware-accelerated graphics, audio, input, and file system access, providing a unified interface for developers to manage game logic and application lifecycles. The framework distinguishes itself through a high-performance architecture that prioritizes efficiency and native interoperability. It utilizes a batch-oriented graphics pipelin
microui is a minimal immediate-mode graphical user interface library written in C, designed for resource-constrained environments such as embedded systems. It operates without dynamic memory allocation and has no external dependencies beyond standard C, making it a self-contained solution for building lightweight interfaces. The library is delivered as a single header file, simplifying integration into any project. It uses a fixed-allocator heap for all runtime state, guaranteeing deterministic memory use and predictable performance. All drawing is delegated to user-supplied callbacks, keepin
libffi is a foreign function interface library that enables calling functions written in other languages at runtime. It serves as a multi-architecture ABI wrapper and dynamic call frame generator, allowing the execution of external functions based on runtime descriptions of argument types and return values. The project provides a portable interface to handle diverse calling conventions across different hardware architectures and operating systems. It includes capabilities for executable closure allocation, which allows foreign code to trigger callbacks within a host language via jump tables s
REFramework is a runtime modding framework for games built on the RE Engine, providing a C# plugin system with typed proxy code generation, a Lua scripting interface, an ImGui-based UI system, a runtime debugging toolkit, and a VR integration layer. At its core, it intercepts and modifies internal game engine functions and state at runtime through hooking and scripting APIs, enabling deep inspection and manipulation of live game objects. The framework distinguishes itself through typed proxy code generation that auto-creates C# interfaces from the game's type database, giving compile-time saf
This project provides a framework for binding Rust and Python, enabling the creation of native extension modules and the embedding of the Python interpreter within host applications. It functions as a cross-language interoperability library that facilitates the execution of scripts, the definition of classes, and the sharing of data structures across the boundary of the two runtimes. The framework distinguishes itself through the use of procedural macros to automate the generation of boilerplate code, simplifying the process of exposing native functions and data types. It employs type-level m
node-ffi is a foreign function interface library for Node.js that enables calling functions from native C dynamic libraries without writing manual C++ bindings. It serves as a system for loading shared objects and DLLs into process memory, translating JavaScript values into binary representations, and executing external binaries at runtime. The project utilizes a wrapper around the libffi library to construct call frames and execute native functions with dynamic arguments. It distinguishes itself by providing a native memory manager for allocating raw pointers and a mapping system that connec
Neon is a framework for writing high-performance native Node.js modules using the Rust programming language. It serves as a foreign function interface bridge and a toolchain for bootstrapping, compiling, and managing Rust-based extensions. The project provides a cross-language memory manager that handles buffers and object borrowing to ensure safe memory access between Rust and JavaScript. It enables the mapping of data types and function calls across the language boundary, allowing Rust functions to be exported to the script environment and JavaScript functions to be called from Rust. The f
CPython is the primary, community-maintained reference implementation of the Python programming language. It functions as a high-level, interpreted execution environment that compiles source code into platform-independent bytecode for processing by a stack-based virtual machine. The runtime manages memory through a combination of reference counting and generational cyclic garbage collection, while dynamic type dispatching determines object behavior at runtime based on metadata stored within object headers. The project is distinguished by its C-based architecture, which provides a stable forei
This project is a professional live video production suite designed for capturing, encoding, and broadcasting high-quality media. At its core, it features a real-time media processing engine that utilizes hardware acceleration to composite multiple audio and video sources with minimal latency. The application provides a centralized studio interface for managing complex scene transitions, layering visual sources through a hierarchical scene-graph engine, and streaming content to multiple platforms simultaneously. The software is built on a cross-platform abstraction layer that ensures consiste
This project provides a full Python interpreter compiled to WebAssembly, enabling the execution of Python code and scientific libraries directly within web browsers and server-side environments. By bridging the gap between language runtimes, it allows developers to run computational tasks, manage packages, and perform data analysis in client-side environments without requiring a backend server. The platform distinguishes itself through a comprehensive foreign function interface that enables bidirectional data exchange, object proxying, and function calling between Python and JavaScript. It in
This application is a desktop network traffic analyzer that provides real-time monitoring and forensic inspection of data packets. By interfacing directly with low-level system drivers, it captures raw network traffic from physical or virtual adapters to identify communication patterns, track bandwidth usage, and diagnose connectivity issues. The system distinguishes itself through an immediate-mode graphical interface that rebuilds the display state every frame, ensuring high responsiveness during live data updates. It maintains performance by using asynchronous message passing to decouple t
flutter-webrtc is a real-time communication SDK and plugin for the Flutter framework. It provides a set of tools for establishing peer-to-peer media connections and low-latency data exchange across mobile, desktop, and web environments. The project enables the creation of applications with live audio and video calling, real-time media streaming, and peer-to-peer data channels for sending encrypted arbitrary data packets without a central server. It supports secure media communication through end-to-end encryption for audio, video, and data streams. The SDK covers broad capabilities including
PyOxidizer is a Python application packager and interpreter embedder designed to compile Python code and dependencies into a single standalone executable binary. It functions as a distribution tool that allows applications to run on target machines without a pre-installed interpreter. The project serves as a bridge between Rust and Python, providing a framework to integrate the two languages for creating linkable libraries or incrementally replacing logic. It facilitates the embedding of a Python runtime into larger applications to execute scripts or provide Python-based logic. The toolset c