Showing 1210 open source projects for "javascript library"

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  • 1
    clsx

    clsx

    A tiny utility for constructing `className` strings conditionally

    ...It then returns a deduplicated, space-separated class string that can be applied directly to HTML or JSX className attributes. The library is distributed in multiple formats (ESM, CommonJS, and UMD) so it works well in bundlers, Node environments, and direct tags. Because it has zero dependencies and a stable API, it is widely used in both small projects and large production codebases where bundle size is a concern.
    Downloads: 0 This Week
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  • 2
    Backbone

    Backbone

    Give your JS app some Backbone with models, views, and collections

    Backbone is a lightweight JavaScript library (sometimes described as a micro-framework) created by Jeremy Ashkenas that adds structure to JavaScript-heavy applications by providing models, views, collections, events and routing tied to RESTful JSON services. Its main philosophy is to provide the minimal set of primitives to organise your client-side code — models for data, collections for groups of models, views for UI interactions, and routers for state/URL management — without prescribing a full rigid framework. ...
    Downloads: 0 This Week
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  • 3
    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: 3 This Week
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  • 4
    Playwright for Python

    Playwright for Python

    Python version of the Playwright testing and automation library

    Playwright enables reliable end-to-end testing for modern web apps. Single API to automate Chromium, Firefox and WebKit. Capable automation for single page apps that rely on the modern web platform. Use the Playwright API in JavaScript & TypeScript, Python, .NET and, Java. With Playwright, test how your app behaves in Apple Safari with WebKit builds for Windows, Linux and macOS. Test locally and on CI. Use device emulation to test your responsive web apps in mobile web browsers. Playwright...
    Downloads: 9 This Week
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  • 5
    Concurrent Ruby

    Concurrent Ruby

    Modern concurrency tools including agents, futures, promises, etc.

    ...It is small, lean, and loosely coupled, thread-safety, and with backward compatibility. Concurrent Ruby makes one of the strongest thread safety guarantees of any Ruby concurrency library, providing consistent behavior and guarantees on all four of the main Ruby interpreters (MRI/CRuby, JRuby, Rubinius, TruffleRuby).
    Downloads: 3 This Week
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  • 6
    hello.js

    hello.js

    API library for connecting with OAuth2 services

    A client-side JavaScript SDK for authenticating with OAuth2 (and OAuth1 with an OAuth proxy) web services and querying their REST APIs. HelloJS standardizes paths and responses to common APIs like Google Data Services, Facebook Graph and Windows Live Connect. It’s modular, so that list is growing. No more spaghetti code! Compiled source, which combines all of the modules, can be obtained from GitHub, and source files can be found in Source. The Bower package shall install the aforementioned...
    Downloads: 0 This Week
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  • 7
    D3

    D3

    Bring data to life with SVG, Canvas and HTML

    D3.js is a JavaScript library for manipulating documents based on data. D3 helps you bring data to life using HTML, SVG, and CSS. D3’s emphasis on web standards gives you the full capabilities of modern browsers without tying yourself to a proprietary framework, combining powerful visualization components and a data-driven approach to DOM manipulation.
    Downloads: 3 This Week
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  • 8
    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: 3 This Week
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  • 9
    ccapi

    ccapi

    A header-only C++ library for interacting with crypto exchanges

    A header-only C++ library for streaming market data and executing trades directly from cryptocurrency exchanges (i.e. the connections are between your server and the exchange server without anything in-between).
    Downloads: 1 This Week
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  • 10
    SurveyJS

    SurveyJS

    JavaScript Survey and Form Library

    SurveyJS Form Library is distributed as npm packages and as scripts and style sheets that you can reference on your page. You can use it in any React, Angular, Vue, Knockout, or jQuery application. React, Angular, Knockout, and Vue3 are supported natively. To communicate with the server, the libraries use JSON objects that represent form schemas (content and layout of a form) and form results (answers). You have the option to build dynamic JSON-driven forms using our free full-featured...
    Downloads: 1 This Week
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  • 11
    Inferno

    Inferno

    React-like JavaScript library for building modern user interfaces

    Inferno is an insanely fast, React-like library for building high-performance user interfaces on both the client and server. React-like API, concepts and component lifecycle events. Switch over easily with inferno-compat. One of the fastest front-end frameworks for rendering UI in the DOM, making 60 FPS on mobile possible. Isomorphic rendering on both client and server, along with fast-booting from server-side renders. Inferno doesn't have a fully synthetic event system like React does....
    Downloads: 0 This Week
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  • 12
    redux-saga

    redux-saga

    An alternative side effect model library for Redux applications

    ...It uses an ES6 feature called Generators to make those asynchronous flows easy to read, write and test. (if you're not familiar with them here are some introductory links) By doing so, these asynchronous flows look like your standard synchronous JavaScript code. (kind of like async/await, but generators have a few more awesome features we need).
    Downloads: 0 This Week
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  • 13
    Web Experience Toolkit

    Web Experience Toolkit

    Open source code library for building innovative websites

    Web Experience Toolkit (WET): Open source code library for building innovative websites that are accessible, usable, interoperable, mobile-friendly and multilingual. This collaborative open source project is led by the Government of Canada. A collection of flexible and themeable templates and reusable components. A collaborative open source project led by the Government of Canada. HTML5-first approach (leveraging native HTML5 support and filling support gaps with “polyfills”) Supporting a...
    Downloads: 0 This Week
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  • 14
    DiceBear

    DiceBear

    DiceBear is an avatar library for designers and developers

    DiceBear is an avatar library for designers and developers. You can choose between simple intentions and lovely designed characters. And best of all, we provide a simple and free HTTP API that you can use right away! You can start directly with our free HTTP-API or alternatively use the JavaScript library. Most options can be specified using the query string.
    Downloads: 0 This Week
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  • 15
    jCasbin

    jCasbin

    An authorization library that supports access control models

    An authorization library that supports access control models like ACL, RBAC, ABAC for Golang, Java, C/C++, Node.js, Javascript, PHP, Laravel, Python, .NET (C#), Delphi, Rust, Ruby, Swift (Objective-C), Lua (OpenResty), Dart (Flutter) and Elixir. In Casbin, an access control model is abstracted into a CONF file based on the PERM metamodel (Policy, Effect, Request, Matchers).
    Downloads: 2 This Week
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  • 16
    AWS Amplify

    AWS Amplify

    A declarative JavaScript library for application development

    The Amplify open-source client libraries provide use-case-centric, opinionated, declarative, and easy-to-use interfaces across different categories of cloud-powered operations enabling mobile and web developers to easily interact with their backends. These libraries are powered by the AWS cloud and offer a pluggable model which can be extended to use other providers. The libraries can be used with both new backends created using the Amplify CLI and existing backend resources. The Amplify...
    Downloads: 0 This Week
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  • 17
    RBush

    RBush

    High-performance JavaScript R-tree-based 2D spatial index

    RBush is a high-performance JavaScript library for 2D spatial indexing of points and rectangles. It's based on an optimized R-tree data structure with bulk insertion support. Spatial index is a special data structure for points and rectangles that allows you to perform queries like "all items within this bounding box" very efficiently (e.g. hundreds of times faster than looping over all items).
    Downloads: 0 This Week
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  • 18
    HyperUI

    HyperUI

    Free Tailwind CSS v4 components for your next project

    HyperUI is a large, copy-and-paste library of Tailwind CSS components aimed at speeding up interface building without adding heavy JavaScript. It groups components by common product needs—navigation, hero sections, pricing, forms, cards, tables, and full e-commerce flows—so teams can assemble pages quickly from consistent building blocks. Each snippet is written as semantic HTML with Tailwind utility classes, making it easy to customize spacing, color, and typography through a project’s Tailwind config. ...
    Downloads: 1 This Week
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  • 19
    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: 0 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: 1 This Week
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  • 21
    Electron Packager

    Electron Packager

    Customize and package your Electron app with OS-specific bundles

    Electron Packager is a command line tool and Node.js library that bundles Electron-based application source code with a renamed Electron executable and supporting files into folders ready for distribution. For creating distributables like installers and Linux packages, consider using either Electron Forge (which uses Electron Packager internally), or one of the related Electron tools, which utilizes Electron Packager-created folders as a basis. Note that packaged Electron applications can be...
    Downloads: 5 This Week
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  • 22
    Casbin

    Casbin

    An authorization library that supports access control models

    An authorization library that supports access control models like ACL, RBAC, ABAC for Golang, Java, C/C++, Node.js, Javascript, PHP, Laravel, Python, .NET (C#), Delphi, Rust, Ruby, Swift (Objective-C), Lua (OpenResty), Dart (Flutter) and Elixir. In Casbin, an access control model is abstracted into a CONF file based on the PERM metamodel (Policy, Effect, Request, Matchers).
    Downloads: 4 This Week
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  • 23
    Signature Pad

    Signature Pad

    HTML5 canvas based smooth signature drawing

    Signature Pad is a JavaScript library for drawing smooth signatures. It's HTML5 canvas based and uses variable width Bézier curve interpolation based on Smoother Signatures post by Square. It works in all modern desktop and mobile browsers and doesn't depend on any external libraries. Demo works in desktop and mobile browsers. You can check out its source code for some tips on how to handle window resize and high DPI screens.
    Downloads: 4 This Week
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  • 24
    Dollar

    Dollar

    A functional tool-belt for Swift Language

    Dollar is a Swift library that provides useful functional programming helper methods without extending any built in objects. It is similar to Lo-Dash or Underscore.js in Javascript. Cent is a library that extends certain Swift object types using the extension feature and gives its two cents to Swift language. It is now moved into a separate repo to support Swift Package Manager.
    Downloads: 0 This Week
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  • 25
    ember-cli

    ember-cli

    The Ember.js command line utility

    Ember.js is a productive, battle-tested JavaScript framework for building modern web applications. It includes everything you need to build rich UIs that work on any device. Some of the best development teams in the world have been iterating on their products for years with Ember. With scalable UI architecture baked-in from the start, you'll be working with the same patterns these organizations use every step of the way. Ember’s out-of-the-box experience has everything you need to start...
    Downloads: 2 This Week
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