Open-source alternatives to Intl Tel Input

mdui is a framework-agnostic UI library and design system based on Material Design 3 standards. It provides a comprehensive set of reusable interface elements implemented as native Web Components, ensuring compatibility across different JavaScript frameworks. The library features a sophisticated theming system that supports light and dark modes, as well as the ability to generate dynamic color palettes from seed colors or image sources. It distinguishes itself with a high level of flexibility in visual customization, using CSS custom properties to control design tokens such as typography, cor

This is a PHP library for parsing, formatting, and validating international phone numbers. It provides tools to verify if a phone number is mathematically possible and logically valid for a specific geographic region, as well as utilities for extracting phone numbers from unstructured text. The library enables the conversion of raw phone strings into standardized formats, including E.164, international, national, and RFC3966. It also provides metadata extraction to identify associated carriers, time zones, and geographic locations in multiple languages. Additional capabilities include region

This project is a Python port of the libphonenumber library, providing a suite of tools for parsing, formatting, and validating international phone numbers. It converts raw phone number strings into structured objects based on international numbering plans and verifies if numbers are possible or valid according to digit length and assigned exchange prefixes. The library provides metadata services to retrieve the original network carrier, geographical location descriptions, and associated time zones for specific phone numbers. It also includes tools for transforming numbers into standardized i

Effector is a reactive state management library and data flow orchestrator designed for building complex, event-driven applications. It models application logic as a directed acyclic graph, where state updates and asynchronous side effects propagate automatically through declarative pipelines. By decoupling business logic from user interface layers, it allows developers to maintain state in independent containers that communicate via standard interfaces, ensuring the system remains framework-agnostic. The library distinguishes itself through its robust support for isolated execution scopes, w

form-create is a JSON-driven form generator and low-code form builder that renders dynamic web forms and validation logic from configuration files. It functions as a data-driven form orchestrator for managing field dependencies and hierarchical data structures within complex layouts. The system includes a visual drag-and-drop interface for designing data entry layouts and automatically generating their corresponding configuration structures. It provides a dynamic UI component library of adaptable form fields and layout containers designed for cross-framework integration and mobile responsiven

Tabulator is an interactive data table library and virtual DOM data grid used to create high-performance tables from JSON or arrays. It functions as a hierarchical data viewer and a spreadsheet interface component, capable of rendering thousands of records efficiently through viewport-based virtualization and progressive loading. The library distinguishes itself by providing a full spreadsheet interface mode with multi-sheet management, cell range selection, and bulk copy-paste capabilities. It supports complex data architectures, including nested data field mapping, expandable tree structure

pickadate.js is a responsive jQuery date and time picker designed for web forms. It provides a localized input interface that allows users to select specific calendar dates and precise clock times. The library features a customizable calendar UI with configurable colors, sizes, and breakpoints. It includes a localization system to adapt interface text and date formats into multiple languages and regional settings. The component includes interactive date and time inputs and a styling system for modifying visual design to match specific brand identities. Its layout automatically adjusts for di

CKEditor 5 is a modular rich text editor framework and JavaScript UI component used to build customizable visual editors. It serves as a system for generating HTML or Markdown content, providing both full rich-text editor components and restricted inline editor components for web applications. The framework includes a collaborative editing engine for real-time simultaneous editing, change tracking, and threaded commenting. It features an AI text assistant for polishing, rewriting, and generating content, as well as a document export engine that transforms rich text into PDF and Word files. T

This is a regular expression library designed for the validation and identification of mobile phone numbers from mainland China. It provides the structural rules and digit constraints necessary to verify that phone numbers follow the correct regional format. The library includes specific patterns to determine the telecommunications provider based on regional prefixes. It also features filters to distinguish between standard voice numbers and IoT or data-only plans. The project covers broad data validation capabilities, including input format verification and carrier identification.

ng-zorro-antd is an Angular UI component library that implements the Ant Design visual language. It provides a collection of pre-built interface elements and professional design system layouts for building web applications. The library is designed as a themable component framework, offering configuration options to modify the visual styles of interface elements. It also functions as an internationalized UI library with built-in support for translating interface elements into multiple languages. The project covers enterprise UI development and multilingual interface design. Its capability sur

FilePond is a JavaScript library designed for managing file uploads, providing a browser-based component that handles selection, validation, and asynchronous transmission to remote servers. It functions as a web form input element that supports drag-and-drop interactions, file property verification, and queue management to ensure that only permitted content is submitted. The library distinguishes itself through extensive client-side media processing capabilities, allowing users to edit, crop, resize, and filter images and videos directly in the browser before transmission. It includes automat

This project is a browser extension reading assistant and speed reading tool. It functions as a web accessibility interface that modifies the appearance of text on websites to help users skim content more quickly and reduce eye strain. The tool implements bionic reading acceleration by bolding the initial parts of words to create visual anchors. Users can customize this experience by adjusting fixation strength, word intervals, and visual styling such as colors and opacity. The software covers broad reading enhancement capabilities, including layout management for line height and dark mode,

SuperTokens Core is an open-source, self-hosted authentication and identity management platform designed for deployment within private infrastructure. It provides a comprehensive suite for managing user accounts, roles, and secure authentication flows, utilizing a modular, recipe-based architecture that allows developers to enable specific security features without modifying the core codebase. The platform distinguishes itself through its robust multi-tenancy capabilities, which allow for the logical or physical isolation of user records and configuration settings across different organizatio

Styled System is a JavaScript library that provides a style props approach for building UI components, enabling developers to map CSS properties directly to component props for rapid, declarative development. At its core, it resolves design tokens from a centralized theme object into CSS values, ensuring consistent styling across components without writing custom stylesheets. The library supports theme-aware styling that connects component styles to a theme object for scalable, maintainable design systems with dynamic value resolution. The library differentiates itself through several capabil

OnsenUI is a web component mobile UI framework and cross-platform UI library used to build hybrid mobile applications and progressive web apps. It provides a software development kit for creating applications with a web-based architecture using HTML5 and JavaScript. The framework automatically adapts the visual style of its interface elements based on the detected mobile device and operating system to maintain a native appearance. It includes binding packages that synchronize state and properties between its web components and frontend frameworks such as React, Vue.js, and Angular.

This project is a PHP interface library that provides a component interoperability layer. It consists of a set of framework-agnostic contracts and standardized definitions that enable different libraries to work together via a consistent contract. The library focuses on providing minimal shared interfaces and API definitions, allowing software components to be used across different PHP projects regardless of the underlying framework. This approach decouples application logic from concrete framework implementations. The project specifically covers service container abstraction and dependency

billboard.js is a JavaScript charting library built on D3.js that renders interactive data visualizations from a single declarative configuration object. It supports a wide range of chart types including bar, line, pie, scatter, area, spline, step, candlestick, funnel, gauge, heatmap, radar, polar, treemap, bubble, donut, and sparkline charts, and can overlay multiple chart types within a single visualization. The library offers an opt-in Canvas rendering mode for improved performance with large datasets and high-density axis displays, alongside its standard SVG-based rendering. The library d

This project is a CSS linter and static analysis tool designed to identify syntax errors, logic flaws, and problematic patterns in Cascading Stylesheets. It functions as a command line validator that verifies code quality and enforces consistent styling and coding standards without requiring a web browser. The analyzer distinguishes itself by incorporating web accessibility auditing to detect patterns that hinder users with disabilities. It also performs browser compatibility checking to identify non-standard hacks and missing vendor prefixes, and provides performance optimization analysis to

Vuelidate is a model-based validation engine and form validation library for Vue.js applications. It functions as a state validator that checks data models and input fields against defined rules to ensure data consistency and correctness. The library provides tools for form state management, allowing developers to track the modified status of fields and extract specific validation errors. It enables control over validation timing, such as deferring the evaluation of rules until a user interaction occurs. The system covers a broad range of client-side data validation capabilities, including r

Cleave.js is a JavaScript library that applies real-time visual formatting to form fields as users type. It provides specialized utilities to enforce visual patterns for credit cards, phone numbers, dates, times, and large numerals. The library includes predefined formatting rules for common data types, such as detecting credit card issuers to apply correct spacing and managing country-specific regional patterns for international phone numbers. It also supports large numeral grouping using Western, Indian, and Chinese numbering systems. Users can define custom input patterns using specific b

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

Omi is a web components framework, reactive UI library, and client-side routing engine. It provides a system for building modular and reusable interface elements based on standard browser web components, using signals to synchronize data changes and update the user interface automatically. The project functions as a cross-framework component tool, exporting standard web elements that operate consistently across different third-party JavaScript libraries. Its capabilities include single-page application navigation and view routing. It also covers reactive state management, component style man

CodeIgniter is a PHP web framework built on the Model-View-Controller pattern, designed for building full-stack web applications. It provides a lightweight toolkit with minimal configuration, organizing application logic into controllers, models, and views for clean separation of concerns. The framework includes a fluent query builder for constructing SQL statements programmatically, PSR-4 autoloading with namespace mapping, and a service-based dependency injection container for managing shared class instances. The framework distinguishes itself through its comprehensive set of built-in tools

Stencil is a compiler used for authoring web component libraries and developing framework-agnostic user interface elements. It transforms TypeScript and JSX source code into standard custom elements that operate natively in the browser. The project enables the implementation of design systems and enterprise component systems by sharing a single codebase across different JavaScript frameworks. It generates specific adapter layers that allow these custom elements to be used as native components in React, Angular, and Vue. The toolset incorporates ahead-of-time compilation to minimize bundle si

Grid.js is a framework-agnostic JavaScript library for rendering interactive data grids. It allows for the display of structured information in tabular formats across different frontend environments, supporting data population from static arrays or JSON imports. The library features a plugin system for extending user interface components and logic, as well as a custom data pipeline for transforming information before it is displayed. It includes built-in support for multilingual localization to translate interface elements and messages. The project covers core data visualization capabilities

This is a visual form builder that generates Vue single-file components from a drag-and-drop canvas. It provides a complete workflow for designing forms visually, previewing them in real time, and exporting them as ready-to-use Vue code with validation rules already configured. The tool integrates a drag-and-drop canvas with a live preview pane, allowing you to see the generated form interactively as you build it. It includes an embedded code editor with hot reload, so changes to the generated code are reflected immediately in the preview. A VS Code extension bridge lets you open the designer

This project is a jQuery plugin and client-side form validator used to verify web form inputs before they are submitted to a server. It employs a rule-based validation engine to check user input against predefined or custom rules to ensure data integrity in the browser. The tool is designed as an ARIA-compliant validation system, using accessibility attributes to link error messages to input fields. This ensures that screen reader users are notified when a field contains an invalid value during the form submission process. The system supports remote server validation via asynchronous HTTP re