whatisgithub

Popular JavaScript repositories on GitHub, each answered in plain English for non-coders: what it is, its tech stack, and how to run it.

• kazupon/vue-i18nA Vue.js plugin that adds multi-language support to your web app, letting you define translations for differen
• novus/nvd3A JavaScript charting library built on D3.js v3 that provides ready-to-use interactive chart components — line
• win12-online/win12Win12 is a fan-made browser simulation of a Windows 12 interface — start menu, draggable windows, dark mode, a
• bitwiseshiftleft/sjclA deprecated JavaScript cryptography library originally built at Stanford University for in-browser encryption
• hashlips/hashlips_art_engineA JavaScript tool that generates large collections of unique artwork by layering PNG files, assigning rarity w
• postmanlabs/newmanA command-line tool that runs Postman API test collections from a terminal so you can automate API testing in
• agentdeskai/browser-tools-mcpBrowserTools MCP connected Chrome to AI coding tools like Cursor so the AI could read console errors, take scr
• trentm/node-bunyanBunyan is a Node.js logging library that writes every log entry as a single JSON line, making server logs mach
• lgwebdream/fe-interviewA Chinese-language bank of 1,000+ frontend interview questions with detailed answers covering HTML, CSS, JavaS
• sublimetext/spacegraySpacegray is a minimal dark visual theme for the Sublime Text code editor, available in several color variatio
• wiselibs/better-sqlite3A fast, synchronous Node.js library for reading and writing SQLite databases — no callbacks or promises, just
• carpedm20/dcgan-tensorflowA Python TensorFlow implementation of DCGAN — a machine learning model that generates realistic images like ce
• mikemcl/decimal.jsdecimal.js is a JavaScript library for precise decimal arithmetic that eliminates the rounding errors built-in
• node-formidable/formidableA Node.js library that parses file uploads and form data as a stream, writing files to the local filesystem, A
• casperjs/casperjsA JavaScript tool for scripting and testing headless web browsers that lets you navigate pages, fill forms, ta
• gitalk/gitalkA comment plugin for websites that stores all comments as GitHub Issues. Visitors sign in with GitHub to leave
• jspreadsheet/ceA JavaScript library that embeds a full spreadsheet — like Excel or Google Sheets — directly into any web page
• wechat-miniprogram/miniprogram-demoThe official WeChat Mini Program demo collects working code examples for all built-in components, platform API
• ciderapp/ciderCider 1 is an archived open-source Apple Music client for Windows, Linux, and macOS built with Electron and Vu
• polyfillpolyfill/polyfill-servicePolyfill.io detects which browser is loading your page and serves only the missing modern JavaScript features
• dequelabs/axe-coreA JavaScript library that automatically tests websites for accessibility issues against WCAG guidelines, detec
• garris/backstopjsBackstopJS is a visual regression testing tool that catches unintended layout changes to web pages by comparin
• eooce/nodejs-argoA Node.js package that deploys a personal encrypted proxy node on free or low-cost cloud platforms using a Clo
• json5/json5JSON5 is a more human-friendly version of the JSON data format that adds comments, unquoted keys, trailing com
• liteloaderqqnt/liteloaderqqntLiteLoaderQQNT is a plugin loader for the QQ messaging app that lets you install third-party themes and featur
• bndw/wifi-cardWiFi Card is a browser-based tool that generates a printable card with your WiFi network name, password, and Q
• thunlp/wantwordsWantWords is an open-source reverse dictionary: describe a concept in plain English or Chinese and a neural ne
• bogdan-lyashenko/js-code-to-svg-flowchartJavaScript library that automatically converts any JS source code into a visual SVG flowchart — shows branches
• kska32/ebooksA personal digital library of roughly 100,000 books hosted on Google Drive, browsable through a web search int
• reamd7/notion-zh_cnA patching and scripting project that unlocks simplified Chinese localization already embedded in Notion app f
• es-shims/es5-shimA JavaScript compatibility library that adds missing ES5 features like Array.map, Object.keys, and Function.bi
• fontello/fontelloA web tool that lets you pick only the icons you need from open-source collections and download a compact cust
• jwilber/roughvizA JavaScript charting library that makes charts look hand-drawn in pencil — useful for showing approximate tre
• olton/metrouiA self-contained front-end framework with ready-to-use UI components styled after Microsoft's flat Metro desig
• cssinjs/jssJSS is a JavaScript library for writing CSS as JavaScript objects so styles are scoped to components — it is n
• adrianhajdin/project_3d_developer_portfolioA ready-to-customize developer portfolio website template with interactive 3D graphics and smooth scroll anima
• os-js/os.jsOS.js is a web-based desktop environment that runs entirely in a browser tab, complete with a window manager,
• fabiospampinato/cashA tiny, modern JavaScript library with jQuery-style syntax for selecting and manipulating webpage elements, at
• marionettejs/backbone.marionetteA JavaScript library that extends Backbone.js with application structure, view management, and memory cleanup
• sandstorm-io/sandstormSandstorm is an open-source self-hosted platform that lets you install productivity web apps on your own serve
• zenoamaro/react-quillReact-Quill is a ready-to-use rich-text editor component for React that wraps the Quill editor, giving users a
• xaboy/form-createVue.js library that builds complete web forms from a JSON rule list — text inputs, dropdowns, date pickers, fi
• jsfiddle/togetherjsTogetherJS is a JavaScript library that adds real-time collaboration to any existing website — shared cursors,
• hexgrad/kokoroText-to-speech Python library backed by an 82-million-parameter model that converts text to spoken audio in ni
• mikemcl/bignumber.jsJavaScript library for precise arithmetic with numbers of any size or precision, fixing the silent rounding er
• sindresorhus/fkill-clifkill-cli is a cross-platform command-line tool to stop running processes by name, ID, or port number, with an
• hpneo/gmapsgmaps.js is a JavaScript library that wraps the Google Maps API so you can embed interactive maps, markers, ro
• sbstjn/timesheet.jsA lightweight JavaScript library that renders horizontal timeline charts on a web page, showing dated events a
• leaverou/awesompleteA tiny dependency-free JavaScript widget that adds an autocomplete dropdown to any text input field using a li
• aheckmann/gmA Node.js library (now officially unmaintained since 2025) that wraps GraphicsMagick and ImageMagick so you ca
• momo707577045/m3u8-downloaderA single HTML file browser tool that downloads streaming videos by fetching all the fragments from an m3u8 pla
• googlechrome/lighthouse-ciLighthouse CI automatically runs Google Lighthouse audits on your website inside your CI pipeline, catching pe
• ptomasroos/react-native-scrollable-tab-viewA React Native component that adds a swipeable tab navigation bar to your iOS and Android app — users swipe be
• mleibman/slickgridA JavaScript data grid library that displays millions of rows in a web page at full browser speed by only rend
• davidjbradshaw/iframe-resizeriframe-resizer is a JavaScript library that automatically adjusts an iframe's height to fit its content — incl
• cazala/synapticSynaptic is a JavaScript library for building and training neural networks in the browser or Node.js — wire la
• wilsonpage/fastdomTiny JavaScript library that eliminates page jank by batching all DOM reads into one group and all writes into
• matthew-andrews/isomorphic-fetchJavaScript library that adds the browser's built-in fetch() function to Node.js so the same HTTP request code
• doocs/technical-booksCurated reading list of technical books for Chinese-speaking software developers, organized by topic — algorit
• futurepress/epub.jsJavaScript library that renders ePub e-books directly in a web browser without any app or plugin, supporting b
• veltman/flubberFlubber is a JavaScript library that smoothly animates between any two shapes on a web page, turning abrupt sh
• ai/size-limitSize Limit measures your JavaScript bundle's real compressed download size and execution time, then blocks dep
• sindresorhus/query-stringA JavaScript library for parsing URL query strings into objects and stringifying objects back into query strin
• muaz-khan/recordrtcA JavaScript library for recording audio, video, screen activity, and canvas content directly inside a browser
• minedojo/voyagerA research AI agent that plays Minecraft autonomously using GPT-4, continuously discovering new skills, storin
• vuelidate/vuelidateA lightweight JavaScript library that adds form validation to Vue.js apps by letting you declare rules in your
• rockstarlang/rockstarA joke programming language where code reads like 1980s heavy metal song lyrics — write programs as rock balla
• fangwei716/30-days-of-react-nativeThirty self-contained React Native demo apps showcasing common mobile UI patterns — stopwatch, swipe cards, To
• tobspr-games/shapez.ioOpen source factory-building game where you design automated production lines to cut, rotate, and paint geomet
• internlm/mindsearchA self-hosted AI search system that breaks your question into sub-queries, searches the web with a real search
• awesome-opencode/awesome-opencodeA community-curated catalog of plugins, themes, pre-built agents, and tutorials for opencode, an AI coding ass
• octref/polacodeA Visual Studio Code extension that turns any code snippet into a polished screenshot that matches your exact
• reach/routerA routing library for React applications that maps URL paths to the right component to display, handling navig
• techfort/lokijsLokiJS is a fast in-memory document database for JavaScript that stores objects in memory for instant queries,
• huibq/keep-alivePlugin files for two Chinese music player apps — LX Music and MusicFree — that add a streaming music source. P
• mapbox/pixelmatchA tiny JavaScript library that compares two images pixel by pixel to count visual differences, mainly used in
• covid19india/covid19india.github.ioThe front-end website for covid19india.org, a volunteer-built COVID-19 tracker for India that displayed charts
• apollographql/react-apolloA now-deprecated library that once connected React apps to GraphQL APIs. Its functionality has been fully merg
• travist/jsencryptA tiny JavaScript library (18.5KB) that lets you encrypt, decrypt, and digitally sign data using RSA public-ke
• tensorflow/tfjs-examplesAn official collection of TensorFlow.js example projects covering image classification, text generation, reinf
• choices-js/choicesChoices.js is a lightweight, dependency-free JavaScript library that replaces plain browser dropdowns with sty
• google/lovefieldLovefield is a relational database that runs entirely inside a web browser using JavaScript, letting you store
• imfunniee/gitfolioGitfolio is a command-line tool that auto-generates a free personal portfolio website and blog from your GitHu
• bogdan-lyashenko/under-the-hood-reactjsA deep-dive visual guide to React internals: a 15-part walkthrough of the Stack reconciler paired with large c
• shentao/vue-multiselectA Vue.js dropdown component with no extra dependencies that supports single selection, multi-selection, taggin
• elemefe/v-chartsA Vue 2 charting library from Ele.me that wraps ECharts with a simpler table-style data format, letting you ad
• fex-team/ueditorA browser-based rich text editor from Baidu's frontend team that embeds in any web page with a few lines of Ja
• choojs/chooChoo is a 4KB JavaScript framework for building web apps with only 6 methods, one-way data flow, and built-in
• brunch/brunchA JavaScript build tool for web apps that bundles and minifies your files using a simple declarative config fi
• reactjs/react-railsA Ruby gem that connects React components to Ruby on Rails apps, letting you render React from Rails views wit
• thebird/swipeA lightweight JavaScript library that turns any set of HTML elements into a touch-friendly slider with swipe g
• beakerbrowser/beakerAn archived experimental web browser built on Electron that let users publish and browse websites stored on th
• grab/cursor-talk-to-figma-mcpA bridge that lets AI coding tools like Cursor and Claude read and modify Figma designs in plain language, con
• pomber/didactA step-by-step tutorial that teaches you how React works internally by rebuilding a simplified version of it f
• rethinkdb/horizonHorizon is an open-source backend platform built on RethinkDB that lets front-end JavaScript developers add li
• paperswithcode/ai-deadlinesA community-maintained website showing countdown timers to paper submission deadlines for major AI research co
• bitcoinjs/bitcoinjs-libA JavaScript library for building Bitcoin applications — create and sign transactions, generate addresses, and
• notwaldorf/tiny-care-terminalA friendly terminal dashboard that shows self-care reminder tweets, a summary of your recent Git commits acros
• ducksboard/gridster.jsA jQuery plugin for building draggable, rearrangeable grid layouts on web pages — designed for dashboard-style
• dtao/lazy.jsJavaScript utility library like Underscore or Lodash that defers work until you ask for results, so operations

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