Open-source alternatives to Pixel Editor

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

Use-persisted-state is a React hook library that persists component state in browser storage and synchronizes updates across multiple tabs and windows. It extends standard component state management by automatically saving values to browser storage providers on every state update, ensuring user data survives page reloads and browser sessions. The library supports cross-component state sharing by linking multiple distinct component instances to a single storage key so they share and update identical data. It provides factory-generated hook instances that create isolated state functions bound t

This is a browser-based puzzle game and HTML5 JavaScript application where players slide and merge numbered tiles on a grid to reach a target value. The game runs entirely on the client side, using web standard technologies to handle game logic and rendering directly in the browser. The application is a mobile-compatible web app that translates touch-swipe gestures and keyboard inputs into directional commands. It includes a local storage score tracker to save and maintain a record of high scores across different sessions.

This project is a CSS theme for the Firefox web browser designed to integrate its user interface with the GNOME desktop environment. It implements a visual layer that aligns browser elements with the typography, spacing, and overall design language of the GTK system. The theme provides multiple color palettes, including standard dark mode and high-contrast OLED black variants. It also includes system icon integration, allowing the browser to replace internal images with system-level icons to match the host operating system's aesthetics. Beyond color and iconography, the project covers interf

Bottom is a cross-platform system monitoring tool that provides real-time visibility into hardware performance and process activity within a terminal-based interface. Built as a command-line utility, it tracks metrics for processor, memory, storage, and network usage while offering tools to inspect, organize, and terminate active system processes. The application utilizes a modular layout engine that allows users to arrange independent data-visualization widgets into a custom grid. This interface is powered by an immediate-mode rendering approach and an event-driven input loop, ensuring the d

BBox-Label-Tool is a web-based utility designed for labeling image collections and defining spatial object boundaries to support supervised machine learning tasks. It provides an interface for drawing rectangular bounding boxes on images, allowing users to record coordinate data for object detection and visual recognition datasets. The tool operates entirely within the browser, utilizing local file processing to read images directly from the user's system without requiring data uploads. It maintains annotation records through browser-based storage, ensuring that spatial data persists across p

ArtPlayer is a modular, browser-based media library designed for embedding and controlling video content within web applications. It functions as a programmable web component that provides developers with granular control over the playback engine, event handling, and the underlying video elements. The player distinguishes itself through a plugin-based architecture that allows for the injection of custom functionality, such as specialized visual effects, advertising, or quality controls, without modifying the core codebase. It utilizes a layered overlay system for interactive UI design, enabli

Scriptcat is a user script manager and browser extension designed to install, execute, and manage custom JavaScript scripts to modify website behavior and extend browser functionality. It features a JavaScript sandbox environment that provides specialized APIs for storage, cookies, and system notifications, alongside a cloud-synced script repository to keep subscriptions and configurations consistent across multiple devices. The project includes an in-browser script editor for writing, testing, and debugging code directly within the browser. It also incorporates a cross-domain request engine

Gitui is a terminal user interface and repository manager built with Rust. It provides a keyboard-driven visual environment for performing version control operations without the need to type manual command line arguments. The application enables the management of Git branches, commits, and remote synchronization, alongside capabilities for stashing temporary work and managing submodules. It includes support for GPG commit signing to verify identity through cryptographic signatures. Users can customize the experience through keyboard shortcut rebinding and visual theme adjustments. The interf

LibreSprite is a digital art application for designing precise pixel characters and objects. It functions as a 2D sprite editor, palette-based image editor, and pixel art animation software. The application specializes in creating frame-based pixel art animations using onion skinning and layer management. It also includes a tiled texture creator for producing seamless repeating patterns and textures through a synchronized tiled viewport. The software covers a broader range of game asset pipeline capabilities, including the creation of static pixel art and the management of fixed color palett

PixiEditor is a multi-functional graphics suite that serves as a pixel art editor, a node-based graphics editor, and a vector graphics tool. It functions as a shader-based painting tool and 2D animation software, providing a comprehensive environment for creating raster images and frame-by-frame motion. The project is distinguished by its use of node-based workflows for building complex image transformations, visual effects, and custom digital brush designs. It utilizes a shader-based brush engine and a node graph to define personalized painting tool behaviors and procedural animations. The

Pixelorama is a cross-platform digital art multitool designed as a pixel art editor, frame-based animation tool, and tilemap design suite. It provides specialized utilities for drawing low-resolution sprites with pixel-perfect precision and generating sprite sheets for game engines. The software distinguishes itself through a dedicated tilemap design system supporting rectangular, isometric, and hexagonal sets, and a frame-based animation system featuring onion skinning and audio synchronization. It also includes a plugin system that allows the installation of community-developed tools for as

TIC-80 is a fantasy console platform and multi-language game engine that provides a virtual retro game development environment. It operates via a bytecode virtual machine that executes game logic within fixed memory and resolution constraints. The project distinguishes itself by offering integrated asset editors for pixel art, tile maps, and a pattern-based chiptune audio workstation all within a single environment. It supports multi-language scripting, allowing developers to write logic in Lua, JavaScript, or Ruby, and provides a standalone game exporter to package projects into native execu

SVGEdit is a browser-based SVG editor and canvas engine used for creating and modifying scalable vector graphics files. It provides a web interface for vector design and functions as an embeddable editor that can be injected into HTML elements within other web applications. The project allows for the development of custom SVG tools and the construction of bespoke vector graphics editors by utilizing its standalone drawing engine.

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

maptalks.js is a JavaScript map rendering library and web map interaction framework used to render interactive 2D and 3D geographic data on a web canvas. It functions as a 3D geospatial engine supporting 3DTiles and GLTF formats, a GeoJSON visualization tool, and a spatial analysis library. The project distinguishes itself through high-performance rendering and dynamic geospatial animation, including the ability to simulate traffic flow and execute smooth visual transitions for map elements. It provides comprehensive tools for interactive geometry editing, allowing users to draw and modify ve

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.

SFML is a cross-platform multimedia framework for C++ designed for creating 2D graphics, audio, and network applications. It functions as a unified set of libraries that provides a 2D graphics rendering engine, an audio processing library, a network socket library, and a cross-platform window manager. The framework allows for the development of interactive software by coordinating real-time 2D graphics rendering, audio playback, and user input handling. It provides a standardized interface for creating and controlling application windows across multiple operating systems. Its capability surf

CodeMirror is a browser-based code editor and extensible text editor framework. It functions as a programmable interface for rendering code and text with support for numerous programming languages, serving as a reusable component for web-based integrated development environments. The project provides a syntax highlighting engine that applies visual styles to text based on programming language rules. It includes a programming API and a CSS theming system to customize the editor's appearance and extend its functionality with custom behaviors. The framework covers capabilities for embedding tex

Termui is a Go terminal user interface library used for building interactive dashboards and visual layouts within a command-line environment. It functions as a TUI layout engine, an interactive CLI framework, and a terminal data visualization toolkit. The library provides a set of specialized widgets for rendering charts, plots, gauges, and tables using character-based graphics. It includes a grid-based system for arranging interface elements using relative coordinates and proportional sizing to create structured displays. The toolkit covers a broad range of capabilities including data visua

python-prompt-toolkit is a Python library and terminal user interface framework used for building interactive command line interfaces. It provides a toolkit for constructing complex terminal applications with advanced input handling and layout management. The project features a real-time syntax highlighting engine and a rendering system that ensures correct alignment and display of double-width Unicode characters. It includes specialized capabilities for command line autocompletion, providing ghost text suggestions and searchable input history. The framework covers a broad range of interface

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

LittleJS is a lightweight HTML5 2D game engine designed for building web games using Canvas and WebGL without external dependencies. It integrates a WebGL sprite renderer, a 2D physics engine for arcade-style collisions and rigid-body dynamics, and a grid-based A* pathfinding system for entity navigation. The engine is distinguished by its procedural audio synthesizer, which generates music and sound effects at runtime using parameter arrays to minimize file sizes. It also features a comprehensive graphics pipeline that supports custom fragment-shader post-processing and a dynamic 2D lighting

Embla Carousel is a framework-agnostic JavaScript library used to build sliding content galleries and touch-enabled slider components. It provides a toolkit for creating carousels that function independently of any specific frontend framework or DOM library. The library focuses on precision swiping and fluid motion for interactive image galleries and custom content sliders. It is designed to maintain consistent behavior across different browser environments and device screen sizes.

Pixel is a 2D game library and graphics engine for the Go programming language. It provides a hardware-accelerated renderer for drawing sprites, geometric shapes, and text, utilizing an optimized system of batching and transformation matrices. The project functions as a comprehensive toolkit for two-dimensional interactive applications, combining a graphics engine with a 2D vector math library for affine transformations and coordinate space projections. It includes a dedicated input manager that tracks keyboard presses and mouse movements using a polling-based system rather than asynchronous

Espanso is a cross-platform text expander and automation tool written in Rust. It replaces short keywords with longer predefined text strings across different operating systems to increase typing speed and consistency. The tool utilizes regular expressions to detect complex typing patterns for dynamic replacement and allows for the execution of custom shell scripts to inject real-time data. Users can restrict expansions to specific software environments, ensuring that keywords only trigger within designated applications. The system includes a manager for installing and updating curated colle

Mosaic is a declarative terminal user interface framework and display engine. It provides a toolkit for building interactive command-line applications by synchronizing a data model with the terminal screen to minimize manual redraws. The library functions as a layout engine for designing structured visual interfaces and real-time displays. It enables the development of interactive console programs, such as system monitors and games, by managing responsive user input and dynamic output updates.