Open-source alternatives to Panelkit

Bubbles is a terminal user interface toolkit and component library providing a set of pre-built, reusable widgets for creating interactive command-line applications. It functions as a framework for building complex tools that require real-time updates and keyboard navigation. The library includes a variety of specialized interface elements such as fuzzy-filterable item lists, single-line and multi-line text inputs, and tabular data grids. It also provides visual feedback components including animated loading spinners, progress meters, countdown timers, and stopwatches. Additional capabilitie

CYLTabBarController is an iOS tab bar UI library and interface system designed for implementing advanced navigation layouts, glassmorphism effects, and dynamic vector-based icon animations. It provides a collection of components to customize the standard iOS navigation bar with specialized visual styles and layouts. The library distinguishes itself through the integration of Lottie for vector animations within navigation icons and the inclusion of a glassmorphism UI kit for creating blurred, translucent overlays. It specifically enables the implementation of emphasized center action buttons a

CBStoreHouseRefreshControl is a collection of UI elements and tools for creating customizable, coordinate-mapped loading animations and gesture-driven refresh indicators for iOS applications. It provides a pull-to-refresh component that triggers content updates via a pull-down gesture on scrollable views. The library distinguishes itself through configuration-driven visual styling and coordinate-based path definitions, allowing animation trajectories and shapes to be defined in external files rather than through hard-coded values. It incorporates randomized animation offsets to introduce visu

FDFullscreenPopGesture is an iOS navigation gesture library and UIKit enhancement designed to implement edge-swipe back navigation and automatic navigation bar transitions in iOS applications. It provides a category for navigation controllers that adds a fullscreen swipe-to-pop gesture matching the system interaction style. The library manages the synchronization of navigation bar visibility animations during fullscreen transitions. This ensures that view controllers which do not natively support edge-swipe navigation can utilize system-standard back gestures. The project covers user interfa

Golden Layout is a framework-agnostic UI container and web window layout manager designed to organize application interfaces into a flexible grid of draggable and resizable multi-pane windows. It functions as a hierarchical grid system that arranges page elements into a tree of nested rows and columns to create complex professional interfaces. The system acts as a multi-window workspace orchestrator, allowing components to be detached from the main layout into independent native browser windows. It also serves as a serializable layout engine that captures the arrangement of user interface com

Illa-builder is a low-code internal tool builder and API integration platform used to create business applications and admin panels. It functions as a database GUI dashboard and visual workflow automator, allowing users to connect to databases and external APIs to manage data and automate business processes. The platform provides a self-hosted app framework that can be deployed on private infrastructure via Docker. It enables the creation of custom dashboards and CRMs while maintaining full control over data and hosting. The system includes a visual drag-and-drop canvas for designing user in

This project is a comprehensive guide to architectural patterns and design techniques for building modular user interfaces with React. It focuses on structuring component hierarchies, implementing state management patterns, and decoupling services to ensure applications remain maintainable and scalable. The collection emphasizes strategies for dependency injection and the separation of business logic from presentation layers. It provides detailed approaches for utilizing containers, higher-order components, and module registries to isolate external services and third-party libraries from the

This is a Material Design iOS UI library providing a collection of modular user interface components for iOS. It functions as a Swift UI component framework and a cross-platform design system to ensure consistent visual and functional experiences across different operating systems. The project enables the integration of Material Design guidelines into iOS applications through a modular component architecture. This allows for the assembly of complex app screens using a library of pre-made interface elements. The framework covers general iOS UI development and the implementation of standardize

This project is a technical study resource and interview preparation guide focused on the React library. It provides a comprehensive frontend interview question bank and concept references designed to help developers master core library primitives and prepare for professional job interviews. The resource covers detailed explanations of React's technical architecture, including state management patterns, performance optimization strategies, and component design. It serves as a knowledge assessment tool for developers to test their understanding of modern frontend engineering through a structur

This project is a collection of reference implementations and sample applications for Flutter. It provides practical examples covering API integration, user authentication, data persistence, and a gallery of UI patterns. The repository distinguishes itself by offering a wide array of functional demos, including implementations for Google and email-based identity verification, cloud database synchronization, and the use of both relational and key-value local storage. It also includes specialized utility examples such as expense tracking, tip calculation, and body mass index tools. The project

react-mosaic is a React tiling window manager used to organize components into a resizable grid of windows and tabbed containers. It provides a layout system featuring resizable split panes and a draggable window orchestrator for arranging content into nested rows and columns. The system includes a serializable layout engine that converts window arrangements into JSON, enabling the persistence and restoration of workspace configurations across sessions. It supports a tabbed workspace interface where multiple panels are grouped into single areas with switchable headers. The project covers com

This project is a cross-platform UI toolkit and universal UI framework providing a collection of pre-styled interface components for building mobile and web applications. It functions as a mobile design system and themed component library, allowing developers to maintain a cohesive visual language across different screens and devices using a shared codebase. The toolkit centers on a themed component architecture that supports global and component-level style configurations. This enables the definition of colors and property defaults in a central location to ensure consistent branding and a un

This project is a jQuery content slider used to create responsive image galleries and touch-enabled carousels. It functions as an accessible UI component that displays images, video, or HTML content using hardware-accelerated animations. The slider includes built-in support for swipe gestures and finger-following navigation for touch-enabled devices. It integrates ARIA attributes, such as Aria Live and Aria Hidden, to ensure screen reader compatibility and accessibility for users of assistive technologies. The system provides comprehensive layout and navigation capabilities, including config

This project is a responsive image gallery and carousel component for React. It provides a sliding interface for displaying images and mixed media, such as embedded videos and iframes, within a single navigational sequence. The gallery supports automated playback with manual play and pause controls, and it adapts its layout for different screen sizes. It includes a fullscreen display mode using native browser implementations and allows for custom slide content rendering via render props. Navigation is handled through touch swipe gestures, keyboard arrow inputs, and direct thumbnail selection

This project is a framework for building interactive, graphical-style terminal applications. It provides a declarative component model that organizes user interfaces into a tree of nested widgets, each managing its own lifecycle, state, and rendering. By subclassing the base application class, developers can construct complex, keyboard-navigable interfaces that run directly within terminal emulators. The framework distinguishes itself through a reactive architecture and a CSS-based layout engine. It uses a reactive attribute system to automatically track state changes and trigger targeted int

This project is a GNOME Shell extension that provides a unified taskbar by combining the application dash and system tray into a single panel. It functions as a JavaScript shell plugin that modifies the desktop layout to support traditional taskbar workflows within the GNOME environment. The extension includes a window management system that allows users to isolate running applications by workspace or monitor, control window grouping, and view live previews of open windows via hover events. Users can define specific click behaviors for application icons and launch favorite applications using

QFramework is a Unity game architecture framework designed to separate presentation, system, and data logic. It implements a layered software architecture to manage complex game states and provides a game engine utility library to reduce boilerplate code. The framework is centered on the Command Query Responsibility Segregation pattern, which separates data modification commands from data retrieval queries. It utilizes a dependency injection container to manage the lifecycles and resolution of singletons and modular components, alongside an event-driven system for state synchronization to pre

jynew is a 3D RPG game engine and development framework designed for building three-dimensional role playing games. It provides a comprehensive suite of tools for scene editing, game logic scripting, and the creation of 3D environments. The project features a specialized 3D asset management pipeline for importing and aligning models and animations, including specific tools for weapon attachment and rendering. It includes a dedicated combat system editor for defining battle encounters, skill effects, and combat grids with real-time synchronization. Additionally, it provides a game modding fram

This project is a declarative UI pattern library and reference implementation for structuring layouts, navigation flows, and data collections across Apple platforms. It provides a collection of practical implementation patterns and component examples for building user interfaces using the SwiftUI framework. The library serves as a cross-platform reference for rendering visual content on iOS and macOS. It includes a view implementation guide that covers managing navigation, handling user inputs, and embedding web content. The codebase covers broad capability areas including layout management

This is a keyboard interaction library and manager for React Native that provides smooth animations, gesture-based dismissal, and event tracking. It serves as a cross-platform keyboard event bus, ensuring consistent keyboard show and hide behavior between iOS and Android. The project features an interactive animation driver that links native keyboard frame events directly to animated values to bypass bridge round-trips. It enables interactive keyboard dismissal via swipe gestures and includes a keyboard preloading system to eliminate first-show latency and input lag. The library provides com

Onboard is an iOS onboarding framework designed for creating guided welcome screen sequences and tutorial flows. It provides a page transition engine to manage navigation and animations between sequential screens containing images, text, and action buttons. The framework includes a SwiftUI UI library with customizable layout components and styles. It features a system for animating content and managing the navigation flow, which allows for the implementation of smooth transitions and fade effects between instructional screens. The project covers background management with support for static

FloatingPanel is a Swift UI component for iOS that provides an interactive bottom sheet and panel manager. It functions as a modal presentation controller that allows developers to display floating containers for related content and utilities alongside a main screen. The system utilizes a magnetic anchor system to snap panels to predefined vertical positions and supports the management of multiple panels within a single view. It synchronizes the position of the panel with the scrolling behavior of internal views to coordinate movement during user interaction. The project covers capabilities

gridstack.js is a JavaScript grid layout library and responsive dashboard framework used to create interactive interfaces with draggable and resizable elements. It functions as a drag-and-drop layout manager and a JSON-serializable layout engine, allowing user-defined interface states to be persisted and restored. The library distinguishes itself through a touch-enabled grid interface and a responsive system that automatically adjusts item placement based on screen breakpoints. It features a collision-based layout engine that manages overlapping coordinates to shift or swap elements, alongsid

ImmersionBar is a set of control utilities for Android designed to manage immersive display modes, notch-aware layouts, virtual keyboard visibility, and system bar aesthetics. It provides a centralized way to maximize screen real estate by toggling full-screen displays and controlling the behavior of status and navigation bars. The library distinguishes itself through specialized adaptation for hardware cutouts and notches, calculating precise offsets and window insets to prevent user interface elements from being obscured. It also includes a dedicated handler for soft keyboard management, wh

Popping is a gallery of iOS user interface animation examples. It provides a collection of visual demonstrations and code samples for implementing smooth interface transitions and motion effects in Apple mobile applications. The project focuses on showcasing how to use the Pop animation engine to create high-performance animations and sophisticated behavioral effects. It serves as a reference for adding polish to mobile views through a variety of motion samples. The content covers mobile interface design and the implementation of UI animations to refine the look and feel of an application.

Koloda is an iOS gesture interaction library and SwiftUI view component used to create swipeable card interfaces. It provides a stack-based view component that manages overlapping views, ensuring only the top-most element remains actively interactive. The library allows for the customization of card appearance, including the configuration of overlays and animations that dictate how background cards move during a swipe. It manages drag behavior and swipe directions, triggering specific logic when cards are swiped, tapped, or fully exhausted. The component covers the implementation of gesture-

This project is a framework-agnostic UI library and a collection of modular web components based on the Material Design visual system. It provides a comprehensive set of interactive interface elements and a responsive web grid system for organizing page content. The library utilizes a design token theme engine to apply consistent typography, colors, and visual styles across an interface. It separates behavioral logic from rendering to ensure that components remain compatible across different JavaScript environments. The system covers responsive layout design and web form interface developmen