facebook / hermes
A JavaScript engine optimized for running React Native.
facebook / hermes
cytoscape / cytoscape.js
Graph theory (network) library for visualisation and analysis
foliojs / pdfkit
A JavaScript PDF generation library for Node and the browser
protobufjs / protobuf.js
High-performance Protocol Buffers for JavaScript and TypeScript. Conformant through Edition 2026, and unusually versatile. No protoc required.
ckeditor / ckeditor5
Powerful rich text editor framework with a modular architecture, modern integrations, and features like collaborative editing.
aandrew-me / ytDownloader
Desktop app to download audio/video from hundreds of sites
WebKit / WebKit
Home of the WebKit project, the browser engine used by Safari, Mail, App Store and many other applications on macOS, iOS and Linux.
npm / cli
the package manager for JavaScript
webtorrent / webtorrent-desktop
❤️ Streaming torrent app for Mac, Windows, and Linux
facebook / jscodeshift
A JavaScript codemod toolkit.
evolus / pencil
The Pencil Project's unique mission is to build a free and opensource tool for making diagrams and GUI prototyping that everyone can use.
sinonjs / sinon
Test spies, stubs and mocks for JavaScript.
bpmn-io / bpmn-js
A BPMN 2.0 rendering toolkit and web modeler.
jprichardson / node-fs-extra
Node.js: extra methods for the fs object like copy(), remove(), mkdirs()
terser / terser
🗜 JavaScript parser, mangler and compressor toolkit for ES6+
jsx-eslint / eslint-plugin-react
React-specific linting rules for ESLint
grpc / grpc-web
gRPC for Web Clients
kpdecker / jsdiff
A javascript text differencing implementation.
remarkjs / remark
markdown processor powered by plugins part of the @unifiedjs collective
beautifier / js-beautify
Beautifier for javascript
ljharb / qs
A querystring parser and serializer with nesting support
jgraph / drawio
draw.io is a JavaScript, client-side editor for general diagramming.
TiddlyWiki / TiddlyWiki5
A self-contained JavaScript wiki for the browser, Node.js, AWS Lambda etc.
jonobr1 / two.js
A renderer agnostic two-dimensional drawing api for the web
i18next / i18next
i18next: learn once - translate everywhere
sockjs / sockjs-client
WebSocket emulation - Javascript client
NorthwoodsSoftware / GoJS
JavaScript diagramming library for interactive flowcharts, org charts, design tools, planning tools, visual languages.
isomorphic-git / isomorphic-git
A pure JavaScript implementation of git for node and browsers!
grommet / grommet
a react-based framework that provides accessibility, modularity, responsiveness, and theming in a tidy package
chaijs / chai
BDD / TDD assertion framework for node.js and the browser that can be paired with any testing framework.
shaka-project / shaka-player
JavaScript player library / DASH & HLS client / MSE-EME player
fengyuanchen / viewerjs
JavaScript image viewer.
expressjs / morgan
HTTP request logger middleware for node.js
zumerlab / snapdom
High-performance engine for capturing, modifying, and converting DOM elements into any format.
mde / ejs
Embedded JavaScript templates -- http://ejs.co
tiagozip / cap
privacy-first, open-source and self-hosted CAPTCHA alternative with PoW and instrumentation challenges.
cryptpad / cryptpad
Collaborative office suite, end-to-end encrypted and open-source.
elasticsearch-dump / elasticsearch-dump
Import and export tools for elasticsearch & opensearch
verlok / vanilla-lazyload
LazyLoad is a lightweight, flexible script that speeds up your website by deferring the loading of your below-the-fold images, backgrounds, videos, iframes and scripts to when they will enter the viewport. Written in plain "vanilla" JavaScript, it leverages IntersectionObserver, supports responsive images and enables native lazy loading.
tabulator-tables / tabulator
Interactive Tables and Data Grids for JavaScript
google / closure-compiler
A JavaScript checker and optimizer.
plopjs / plop
Consistency Made Simple
firecrawl / firecrawl-mcp-server
Official Firecrawl MCP server, the context API for AI agents: search, scrape, and interact with the web, plus parse, crawl, map, Agent and Monitor, from any MCP client.
sindresorhus / execa
Process execution for humans
PrismarineJS / mineflayer
Create Minecraft bots with a powerful, stable, and high level JavaScript API.
clappr / clappr
An extensible, plugin-oriented, HTML5-first media player for the web
krausest / js-framework-benchmark
A comparison of the performance of a few popular javascript frameworks
hotwired / turbo
The speed of a single-page web application without having to write any JavaScript
sverweij / dependency-cruiser
Validate and visualize dependencies. Your rules. JavaScript, TypeScript, CoffeeScript. ES6, CommonJS, AMD.
AlaSQL / alasql
AlaSQL.js - JavaScript SQL database for browser and Node.js. Handles both traditional relational tables and nested JSON data (NoSQL). Export, store, and import data from localStorage, IndexedDB, or Excel.
jspreadsheet / ce
Jspreadsheet is a lightweight JavaScript data grid component for creating interactive data grids with advanced spreadsheet controls.
garris / BackstopJS
Catch CSS curve balls.
OpenSignLabs / OpenSign
🔥 The free & Open Source DocuSign alternative
marionettejs / marionette
A JavaScript library for structured interfaces, with explicit ownership and lifecycle. Built for agent-led development. Canonical Marionette repository; v4 history is preserved on the v4 branch.
mapbox / pixelmatch
The smallest, simplest and fastest JavaScript pixel-level image comparison library
Choices-js / Choices
A vanilla JS customisable select box/text input plugin ⚡️
rethinkdb / horizon
Horizon is a realtime, open-source backend for JavaScript apps.
imba / imba
🐤 The friendly full-stack language
pshenok / server-survival
Tower defense game that teaches cloud architecture. Build infrastructure, survive traffic, learn scaling.
RobinHerbots / Inputmask
Input Mask plugin