Showing 2640 open source projects for "javascript ui library"

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  • 1
    Spin.js

    Spin.js

    A spinning activity indicator

    Spin.js is a zero-dependency JavaScript library creating animated, resolution-independent loading spinners using CSS keyframes (with VML fallback for legacy IE). It offers a flexible API for customizing spinner size, color, speed, and more. Distributed as ES6 module with TypeScript definitions.
    Downloads: 1 This Week
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  • 2
    XState

    XState

    State machines and statecharts for the modern web

    JavaScript and TypeScript finite state machines and statecharts for the modern web. Statecharts are a formalism for modeling stateful, reactive systems. This is useful for declaratively describing the behavior of your application, from the individual components to the overall application logic. XState is a library for creating, interpreting, and executing finite state machines and statecharts, as well as managing invocations of those machines as actors.
    Downloads: 4 This Week
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  • 3
    Flow

    Flow

    A static type checker for JavaScript

    Flow is a static type checker for JavaScript. It was designed to help improve code quality and developer productivity. It does this through several smart capabilities. First, it identifies problems as you code, so you no longer have to waste time guessing and checking again and again. Second, it understands your code and makes its knowledge available, allowing you to build other smart tools on top of it.
    Downloads: 2 This Week
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  • 4
    CoreUI 4 Angular 13 Free Admin Template

    CoreUI 4 Angular 13 Free Admin Template

    CoreUI Angular is free Angular 13 admin template

    CoreUI Angular Admin Panel is not another blend of 3rd parties free components and libraries. It's the only Open Source Angular Admin Dashboard Template built on the enterprise-grade hand-crafted Angular Components Library created and backed by professionals. CoreUI helps you build reliable web apps faster than before. Save thousands of development hours by using ready-made, reusable, and commonly used widgets and UI components. Moreover, CoreUI Angular Dashboard is delivered with a ready-to-use environment, so you don't have to waste time configuring the project. ...
    Downloads: 2 This Week
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  • 5
    Sycamore

    Sycamore

    A library for creating reactive web apps in Rust and WebAssembly

    A reactive library for creating web apps in Rust and WebAssembly. Sycamore harnesses the full power of Rust via WebAssembly, giving you full control over performance. Write code that feels natural. Everything is built on reactive primitives without a cumbersome virtual DOM. No JavaScript. Had enough of JavaScript? So have we. Create apps using Sycamore without touching a single line of JS.
    Downloads: 0 This Week
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  • 6
    Groq TypeScript / Node.s

    Groq TypeScript / Node.s

    The official Node.js / Typescript library for the Groq API

    ...The library also supports passing different input types (file streams, blobs, fetch responses) for media-related endpoints, making it flexible for diverse environments (backend, browser, serverless). With this SDK, developers can call Groq’s models, transcribe audio, perform file uploads — all with minimal boilerplate — which streamlines creation of AI-enabled applications in the JavaScript/TypeScript ecosystem.
    Downloads: 2 This Week
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  • 7
    Apisauce

    Apisauce

    Axios + standardized errors + request/response transforms

    Talking to APIs doesn't have to be awkward anymore. Low-fat wrapper for the amazing Axios HTTP client library. All responses follow the same flow: success and failure alike. Responses have a problem property to help guide exception flow, attach functions that get called each request, attach functions that change all request or response data. Detects connection issues (on React Native). The only required property is baseURL and it should be the starting point for your API. It can contain a...
    Downloads: 0 This Week
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  • 8
    stylelint

    stylelint

    A linter that helps you avoid errors and enforce conventions

    stylelint understands the latest CSS syntax including custom properties and level 4 selectors. Extracts embedded styles from HTML, markdown and CSS-in-JS object & template literals. Parses CSS-like syntaxes like SCSS, Sass, Less and SugarSS. Has over 170 built-in rules to catch errors, apply limits and enforce stylistic conventions. Supports plugins so you can create your own rules or make use of plugins written by the community. Automatically fixes the majority of stylistic violations. Itis...
    Downloads: 0 This Week
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  • 9
    GoJS

    GoJS

    JavaScript diagramming library for interactive flowcharts & org charts

    Build interactive flowcharts or flow diagrams. Let your users build, modify, and save diagrams with JSON model output. Visualize state charts and other behavior diagrams. Create diagrams with live updates to monitor state, or interactive diagrams for planning. GoJS allows considerable customization of links and nodes to build all kinds of diagrams. Visualize flow, or connect pipes. Create genogram and medical diagrams, or editable family trees with collapsible levels. Create classic org...
    Downloads: 6 This Week
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  • 10
    Nano Events

    Nano Events

    Simple and tiny (107 bytes) event emitter library for JavaScript

    Nano Events is a minimalistic, high-performance event emitter library for JavaScript. Its goal is to provide the simplest possible API to add pub/sub capabilities (emitters and listeners) to any JS object or application, while keeping overhead and bundle size extremely small. Rather than offering many complex features, nanoevents focuses on the core primitives: creating an emitter, subscribing to named events, emitting events with arbitrary data, and unsubscribing.
    Downloads: 0 This Week
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  • 11
    Halfmoon

    Halfmoon

    Front-end framework with a built-in dark mode

    ...Halfmoon is a responsive front-end framework that is great for building dashboards and tools. Built-in dark mode, full customizability using CSS variables (around 1,500 variables), optional JavaScript library (no jQuery), Bootstrap-like classes, and cross-browser compatibility (including IE11). Halfmoon comes with a built-in, toggleable dark mode, which is one of its most important and defining features. The framework is built entirely using CSS variables (also known as CSS custom properties). There are close to 1,500 CSS variables, which means that almost everything can be customized by overriding a property, making it very easy to theme Halfmoon to fit your brand. ...
    Downloads: 0 This Week
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  • 12
    ILLA Builder

    ILLA Builder

    Low-code platform allows you to build business apps

    ILLA is a robust open source low-code platform for developers to build internal tools. By using ILLA's library of Components and Actions, developers can save massive amounts of time on building tools. Build tools through drag-and-drop components, customize your AI Agent, connect to your data sources, and make AI a smart tool tailored to your needs and data, making your work more intelligent. By dragging and dropping components, you can quickly build the UI of the apps and implement any functionality you desire. ...
    Downloads: 0 This Week
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  • 13
    chai

    chai

    BDD / TDD assertion framework for node.js

    Chai is a BDD / TDD assertion library for node and the browser that can be delightfully paired with any javascript testing framework. Chai has several interfaces that allow the developer to choose the most comfortable. The chain-capable BDD styles provide an expressive language & readable style, while the TDD assert style provides a more classical feel. Plugins extend Chai's assertions to new contexts such as vendor integration & object construction.
    Downloads: 4 This Week
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  • 14
    Kaffy

    Kaffy

    Powerfully simple admin package for phoenix applications

    Kaffy is an Elixir/Phoenix library that provides a powerful, customizable admin interface with minimal setup. Inspired by Django’s built-in admin and Rails’ ActiveAdmin, it allows developers to manage data models, forms, dashboards, and navigation without altering their existing codebase. Kaffy auto-generates CRUD interfaces for your Ecto schemas, supports advanced customizations, and integrates seamlessly with Phoenix projects. It’s designed to be both simple for quick setup and flexible...
    Downloads: 0 This Week
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  • 15
    TanStack Form

    TanStack Form

    Headless, performant, and type-safe form state management

    TanStack Form is a powerful, headless form management library designed to simplify form handling in web applications. It offers a flexible and extensible API that allows developers to manage form state, validation, and submission with ease. By providing a headless architecture, TanStack Form enables seamless integration with various UI frameworks and custom components, promoting a clean separation between form logic and presentation.​
    Downloads: 0 This Week
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  • 16
    Ct.js

    Ct.js

    Ct.js is a desktop game engine that makes learning programming fun

    ct.js makes learning programming fun and game development easy by its visual tools, good docs and flexible, modular library. It is free, open-source, and is loved by hobbyists, professionals, teachers, and their students. Bad tools hinder your performance. Ct.js is designed to be like a brush with which you create games, not to be an enemy you will fight with. ct.js bundles come with offline docs, tutorials, and editable examples and demos. The code editor highlights errors and provides...
    Downloads: 2 This Week
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  • 17
    Eel

    Eel

    A Python library for making simple Electron-like HTML/JS GUI apps

    Eel is a little Python library for making simple Electron-like offline HTML/JS GUI apps, with full access to Python capabilities and libraries. Eel hosts a local webserver, then lets you annotate functions in Python so that they can be called from Javascript, and vice versa. Eel is designed to take the hassle out of writing short and simple GUI applications.
    Downloads: 2 This Week
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  • 18
    LibPDF

    LibPDF

    A modern PDF library for TypeScript

    LibPDF-js/core is a modern, TypeScript-first PDF processing library that provides a comprehensive toolkit for parsing, modifying, and generating PDF documents with a clean, intuitive API designed to handle real-world files safely and robustly. Unlike many existing JavaScript PDF libraries, it emphasizes lenient parsing that can gracefully handle malformed structures and fallback strategies where typical parsers fail, making it useful for production environments that encounter unpredictable file formats. ...
    Downloads: 3 This Week
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  • 19
    Grain

    Grain

    The Grain compiler toolchain and CLI, home of the modern web staple

    Grain is a new language that puts academic language features to work. Enter the future. Grain compiles directly to WebAssembly, taking full advantage of its speed and efficiency. No runtime type errors, ever. Every bit of Grain you write is thoroughly sifted for type errors, with no need for type annotations. Grain has its roots in functional programming, but is flexible enough to accommodate different programming styles for various applications. Grain aims to modernize innovative features...
    Downloads: 1 This Week
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  • 20
    ember-intl

    ember-intl

    Localization library for any Ember Application or Addon

    Internationalize your Ember apps. Ember-intl is an internationalization addon that unlocks translating simple to complex messages using built-in pluralization rules, number and datetime formatting, with support for over 150 languages. Ember-intl is now entirely built on native ECMAScript Internationalization APIs that are now supported by all modern browsers. Locale-aware numbers. Formatting of currencies, decimals, and percentages. Locale-aware dates and times formatting. Locale-aware...
    Downloads: 4 This Week
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  • 21
    GitHub Markdown CSS

    GitHub Markdown CSS

    The minimal amount of CSS to replicate the GitHub Markdown

    A minimal CSS library replicating GitHub’s Markdown rendering styles. Simply apply github-markdown.css and wrap content in .markdown-body to inherit styling—auto light/dark theme detection with size constraints for responsive layout.
    Downloads: 5 This Week
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  • 22
    Stencil

    Stencil

    A web component compiler for building UI components

    Stencil is a toolchain for building reusable, scalable design systems. Generate small, blazing fast, and 100% standards based Web Components that run in every browser. The magical, reusable web component compiler. Start building in seconds. With intentionally small tooling, a tiny API, and zero configuration, Stencil gets out of the way and lets you focus on your work. A tiny runtime, prerendering, and the raw power of native Web Components make Stencil one of the fastest compilers around....
    Downloads: 2 This Week
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  • 23
    SuperTest

    SuperTest

    Super-agent driven library for testing node.js HTTP servers

    A super-agent driven library for testing node.js HTTP servers using a fluent API. The motivation with this module is to provide a high-level abstraction for testing HTTP, while still allowing you to drop down to the lower-level API provided by superagent. Install SuperTest as an npm module and save it to your package.json file as a development dependency. You may pass an http.Server, or a Function to request(), if the server is not already listening for connections then it is bound to an...
    Downloads: 3 This Week
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  • 24
    SWR

    SWR

    React Hooks library for remote data fetching

    The name “SWR” is derived from stale-while-revalidate, a HTTP cache invalidation strategy popularized by HTTP RFC 5861. SWR is a strategy to first return the data from cache (stale), then send the fetch request (revalidate), and finally come with the up-to-date data. With SWR, components will get a stream of data updates constantly and automatically. And the UI will be always fast and reactive. With just one single line of code, you can simplify the logic of data fetching in your project,...
    Downloads: 2 This Week
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  • 25
    FluentValidation

    FluentValidation

    .NET validation library for building strongly-typed validation rules

    FluentValidation is a popular .NET library offering a fluent, expressive interface for building strongly-typed validation rules. It supports modern .NET runtimes including .NET 8+, and integrates smoothly into .NET Core, Blazor, and other ecosystems. FluentValidation has adopted the Code of Conduct defined by the Contributor Covenant to clarify expected behavior in our community. For more information see the .NET Foundation Code of Conduct. A validation library for .NET that uses a fluent...
    Downloads: 1 This Week
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