Open Source JavaScript Libraries - Page 13
Sort By:
JavaScript Libraries
View 77 business solutionsBrowse free open source JavaScript Libraries and projects below. Use the toggles on the left to filter open source JavaScript Libraries by OS, license, language, programming language, and project status.
-
$300 Free Credits to Build on Google CloudPut your $300 in credit toward real workloads, then keep building with free monthly usage for 20+ products. No commitment and no charge until you upgrade.
-
Fully Managed MySQL, PostgreSQL, and SQL ServerCloud SQL handles your database ops end to end, so you can focus on your app.
-
1
HTML CSS Course
Starter files, final projects, and FAQ for my HTML + CSS course
HTML CSS Course is the official repository for Jonas Schmedtmann’s Build Responsive Real-World Websites with HTML and CSS course. It contains starter files and final code for the sections and projects included in the course. The repository helps beginners practice semantic HTML, modern CSS, layout systems, responsive design, and real-world website construction. Students can begin with provided starter assets, follow the course lessons, and compare their results against the completed code when troubleshooting. The material is focused on practical frontend fundamentals rather than JavaScript-heavy interactivity. It is especially useful for learners who want to understand how professional static websites are structured, styled, and adapted across screen sizes. -
2
A full-featured lightweight wrapper library of the native html canvas element written in Javascript, aimed to make visualization and animation using canvas simpler. Features animation support, layers, event capture, multitouch and many examples.
-
3
HeyUI.ext
UI Toolkit for Web, Vue3.0
HeyUI.ext is a comprehensive UI component library built for Vue.js that provides a wide range of reusable components and tools for developing modern web applications with efficiency and consistency. Designed as a full UI toolkit rather than a minimal component set, it includes elements for forms, tables, modals, navigation, and data handling, making it suitable for building complex interfaces such as dashboards and admin panels. The library emphasizes simplicity and speed, allowing developers to quickly assemble functional interfaces while maintaining scalability as projects grow. It supports modern development workflows through npm installation as well as CDN usage, enabling both lightweight experimentation and full-scale application integration. HeyUI also includes features such as validation, internationalization, and advanced components like trees, selectors, and date pickers, which help streamline common frontend tasks. -
4
Highland
High-level streams library for Node.js and the browser
Highland is a JavaScript library designed to simplify working with streams and asynchronous data flows by providing a functional programming interface on top of Node.js streams. It allows developers to process data in a declarative and composable way, treating streams as sequences that can be transformed using familiar functional patterns such as map, filter, reduce, and flatMap. The library abstracts away much of the complexity of handling backpressure and asynchronous callbacks, enabling developers to focus on data transformation logic rather than low-level stream management. Highland supports both synchronous and asynchronous sources, including arrays, events, promises, and Node streams, making it highly versatile. It also emphasizes lazy evaluation, meaning that data is processed only when needed, improving performance and efficiency in large data pipelines. -
Custom VMs From 1 to 96 vCPUs With 99.95% UptimeLive migration and automatic failover keep workloads online through maintenance. One free e2-micro VM every month.
-
5
Highway
Highway - A Modern Javascript Transitions Manager
Highway is a lightweight (2.5ko gzipped), easy-to-use, flexible, and modern library to create AJAX navigations with animations on websites. Don't bother about all the processes behind the scenes and focus on creative animations. -
6
Hiring Without Whiteboards
Companies that don't have a broken hiring process
Hiring-without-whiteboards is a curated list of companies and teams that avoid traditional "whiteboard" interviews, instead focusing on realistic and practical evaluation methods. In this context, "whiteboards" symbolizes outdated or unhelpful computer science trivia questions often criticized in technical interviews. The project highlights organizations that emphasize interviewing techniques more aligned with actual day-to-day work, such as collaborative problem-solving, pair programming, or take-home assignments. It encourages a shift away from brainteasers, riddles, or puzzle-based interviews, which can create unnecessary barriers for candidates. The repository not only provides a resource for job seekers looking for fairer interview processes but also offers guidance for companies seeking to improve their hiring practices. With community contributions, it continues to grow as a reference for employers and applicants who value practical, respectful, & effective technical evaluation. -
7
Hittest.js (PNG Collision Detection)
Javascript hitTest on tranparent PNG with collision game sample
Javascript hitTest on tranparent PNG with collision detection game sample -
8
Hotkeys JS
A robust Javascript library for capturing keyboard input
hotkeys-js is a tiny, framework-agnostic library for binding keyboard shortcuts in the browser, from simple key presses to complex combos and sequences. It provides a declarative API to register handlers like ctrl+k, shift+alt+p, or g g, and it normalizes key behavior across major browsers. The library includes scoping, so the same shortcut can trigger different actions depending on page context, and it offers filters to ignore inputs when the user is typing in form fields. You can enable or disable groups of shortcuts dynamically, making it well suited for SPAs and dashboard apps. Because it has no external dependencies and a small footprint, it drops easily into existing codebases. Its focus on developer ergonomics makes defining, managing, and cleaning up shortcuts straightforward. -
9
How-To-Ask-Questions-The-Smart-Way
Correctly propose technical questions and get the answers you want
The How-To-Ask-Questions-The-Smart-Way project is a widely recognized guide that teaches developers how to communicate effectively when seeking help in technical communities. It focuses on improving the quality of questions by emphasizing clarity, context, and effort before asking for assistance. The document explains common mistakes, such as vague descriptions or lack of research, and provides strategies for formulating precise and useful questions. It also highlights the importance of respecting the time and expertise of others, encouraging a culture of constructive collaboration. The guide is particularly valuable for beginners who are learning how to interact in open-source communities and forums. By improving communication, it increases the likelihood of receiving helpful and accurate responses. Overall, it serves as a foundational resource for effective problem-solving and collaboration in software development. -
Paessler: Easy to Use With Enterprise Power. Free TrialYou shouldn't have to choose between a monitoring tool that's easy to use and one that's powerful enough for a complex environment. PRTG's low-code interface lets any admin build dashboards, set alerts and monitor devices without scripting, while custom sensors and full API access are there when your team needs deeper control. One platform, no compromise. Download a free 30-day trial now.
-
10
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. The components are responsive by default, using grid and flex patterns that adapt cleanly from mobile to widescreen layouts. Accessibility is treated pragmatically: markup favors proper roles and focus states, and most interactive behaviors can be wired with lightweight libraries or framework code if desired. Because everything is plain markup, adoption is frictionless in any stack (React, Vue, Svelte, Rails, Laravel), and designers can tweak styling without refactoring component logic. -
11
Javascript library to check in a web page if an user is active or idle, action detected by mouse move or key down, depending user's state linked action will be launched more or less often.
-
12
Image Map Resize
Responsive HTML Image Maps
This is a simple library that makes HTML Image Maps responsive so that they automatically stay scaled to the size of the image they are attached to. It detects the window being resized and updates the coordinates of the image map accordingly. This library can be used with or without jQuery. -
13
Image Select
Image Select is an extension of Chosen, a jQuery plugin
We designed this plugin extension as a humanized UI element for social networking sites that need to facilitate relations between people. Research shows that people are extremely sensitive to photos of others, so we needed to revamp the traditional UI elements to make them more intuitive and human. You can use these plugin extensions for modeling multiple (one-to-many) or single (one-to-one) relations between people. We couldn't find any scripts that had this full functionality, so we developed it ourselves on top of Chosen. Hope you find it helpful, and get back if you have any feedback/improvements. -
14
Immutable.js
Immutable collections for JavaScript
Immutable.js offers a collection of Persistent Immutable data structures for JavaScript. Immutable data is unchangeable once created, which makes application development so much simpler. There’s no defensive copying, and you get advanced memoization and change detection techniques with simple logic. Persistent data gives you a mutative API, one that doesn’t update data in-place but always produces new and updated data. The data structures that Immutable.js provides include List, Stack, Map, OrderedMap, Set and more. These structures are highly efficient on modern JavaScript VMs, and minimize the need to cache or copy data. -
15
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. Inferno has a partially synthetic event system, instead opting to only delegate certain events (such as `onClick`). Inferno doesn't support React Native. Inferno was only designed for the browser/server with the DOM in mind. Inferno doesn't support legacy string refs, use `createRef` or callback `ref` API. Inferno provides lifecycle events on functional components. This is a major win for people who prefer lightweight components rather than ES2015 classes. -
16
Intense Images
A simple library to view large images up close
Intense Images is a standalone JavaScript library for viewing images in a full-screen, immersive style. It lets users open images into a focused viewer and pan around them using mouse or touch position. The library does not require jQuery or another framework, which makes it easier to add to lightweight web projects. It handles the creation, styling, and management of the viewer and captions while leaving normal image styling up to the developer. Intense Images is useful for portfolios, galleries, product pages, photography sites, and visual storytelling experiences. Its main value is giving websites a simple way to make image viewing feel larger, smoother, and more interactive. -
17
Intermock
Mocking library to create mock objects with fake data for TypeScript
Intermock is a TypeScript utility developed by Google that automatically generates mock objects and JSON data for TypeScript interfaces using the Faker library. It simplifies frontend and API testing by creating realistic, schema-compliant mock data directly from interface definitions, eliminating the need for manual mock creation. Intermock supports a wide range of TypeScript constructs including interfaces, unions, generics, mapped types, and tuples, ensuring comprehensive type coverage. It can be used both via a command-line interface (CLI) and programmatically through its API, making it suitable for integration into build pipelines or development environments. The tool also allows fine-grained control over output format—object, JSON, or string—and supports JSDoc annotations to define custom Faker data generators. By leveraging Intermock, developers can quickly generate realistic mock datasets for testing, prototyping, and documentation purposes without writing boilerplate code. -
18
Intro.js
Lightweight library for creating step-by-step customer onboarding
Intro.js is a lightweight library for creating step-by-step customer onboarding. You can install Intro.js in a few simple steps. Intro.js consists of two main files, the JavaScript part and the CSS part which renders the elements nicely. The simplicity of Intro.js API will help you to develop an advanced onboarding for your products. Intro.js is lightweight, 10kB and has no external dependencies! Intro.js provides various ways to configure your product onboarding and customize every single step of your tour. Intro.js is Free and open-source, published under AGPL license. We also provide commercial license, supporting your team to successfully integrate Intro.js! Intro.js is AGPL-licensed and open-source. However, if you want to use Intro.js in your commercial app, website or plugin, you would need to obtain a commercial license. -
19
Introduction to Vue.js 3 Course
Workshop Materials for my Introduction to Vue.js Workshop
Introduction to Vue.js 3 Course houses the workshop materials for an “Introduction to Vue.js” course created by Sarah Drasner, originally delivered on Frontend Masters. The content covers essential Vue.js concepts such as directives, data rendering, methods, watchers, computed properties, components, slots, and the Composition API (for Vue 3), complemented with example code and exercises. Since the course was updated for Vue 3, the repo includes directories for both Vue 2 and Vue 3 resources, enabling learners to explore both versions depending on their work context. Also included are build setups (Vue CLI, Nuxt) and additional sections on animation and advanced topics like custom directives, making it a full learning path rather than just a quick tutorial. The README lists slide sets, exercise folders, solution folders and recommended tooling so that learners can clone the repo and follow along in their own time. -
20
Involt
Inject hardware interactions directly into HTML layout
An easy way to think outside the box. Simplicity of HTML and CSS combined with hardware interactions. Create your app using only basic knowledge of HTML, CSS, and Arduino. Instead of learning advanced coding focus on overall experience and quickly develop results. Using CSS allows you to work on the layout and interfacing with the device at once. Involt comes with a UI kit to help you get started. The foundation of Involt is overcoming obstacles that block many concepts from making it to the real world. There are many prototyping tools for software and hardware but none covers both. With its fresh approach, inject tangible interactions into your app like never before. -
21
Ionflux Computer Graphics Toolkit
Toolkit for 2D and 3D computer graphics
NOTICE: This repository of IFCG will no longer be maintained. You can find the current version at https://github.com/TehFlux/ifcg The Ionflux Computer Graphics Toolkit is a collection of libraries for 2D and 3D graphics processing. The toolkit is written primarily in C++ and has full Python bindings for all components. -
22
J-Focus
一个Javascript脚本实现的动画应用框架
J-Focus是一个Javascript脚本实现的动画应用框架，用于快速地开发基于动画效果的Web应用。 J-Focus is a Javascript script to achieve the animation application framework for rapid development of Web applications based on the animated. -
23
JAgile (or "Java Agile") is a simple but practical framework in Java. It implements some JEE Patterns as Transfer Object, Session Facade, Business Object, DAO Factory and DAO. Its unique persistence implementation is the Hibernate Framework.
-
24
JMG
JavaScript GUI library.
JMG is a JavaScript GUI library. The goal of the project is to allow developers, the creation of responsive web applications using the same code for desktop and mobile devices. -
25
JS Bits
JavaScript concepts with code
JS Bits is an open-source collection of JavaScript concepts explained through concise code examples and clear explanations that serve as a practical learning resource for both beginners and experienced developers. It breaks down essential parts of the language — such as core syntax, quirky behaviors, functions, scope, closures, asynchronous patterns, and commonly misunderstood features — into digestible pieces that make it easier to internalize how JavaScript really works in modern development. The repository is organized by topic so that learners can jump directly into areas they want to reinforce or explore, and community contributions are welcomed to expand coverage or add alternative explanations. Rather than being a formal textbook, js-bits acts like a developer’s code-centric cheat sheet that helps bridge the gap between abstract language specifications and real usage patterns in the browser or Node.js.
