This app works best with JavaScript enabled. Web Dev frameworks Next.js - Framework for server-rendered or statically-exported React apps. San - Flexible JavaScript component framework. hapi - Rich framework for building applications and services. Koa - Smaller, more expressive, and more robust foundation for web applications and APIs. Umi - Pluggable enterprise-level react application framework. Vue.js - Progressive JavaScript Framework. Mithril - Modern client-side Javascript framework for building Single Page Applications. (HN ) Solid - Declarative, efficient, and flexible JavaScript library for building user interfaces. Neutrino dev Alpine.js - Rugged, minimal framework for composing JavaScript behavior in your markup. (Awesome Alpine ) After.js - Next.js-like framework for server-rendered React apps built with React Router 4. Torus - Event-driven model-view UI framework for the web, focused on being tiny, efficient, and free of dependencies. (Web ) Hyperapp - Tiny framework for building web interfaces. (Web ) (HN ) (Hyperawesome ) Hyperapp FX - Effects for use with Hyperapp. Phenomic - Modular website compiler (React, Webpack, Reason and whatever you want). Halfmoon - Front-end framework with a built-in dark mode and full customizability using CSS variables; great for building dashboards and tools. (Docs ) Sinuous - Low-level UI library with a tiny footprint. (Docs ) Overture - Powerful JS library for building really slick web applications, with performance at, or surpassing, native apps. Lucia - Tiny library for tiny web apps. (Docs ) Ractive.js - Next-generation DOM manipulation. JSX Lite - Write components once, run everywhere. Compiles to Vue, React, Solid, Liquid, and more. Perlite - Hyperactiv + lit-html + extensions. Simple and declarative way to create rich client-side widgets designed with server-side apps in mind. Democrat - Library that mimic the API of React (Components, hooks, Context...) but instead of producing DOM mutation it produces a state tree. Raj - Elm Architecture for JavaScript. Reframe - New kind of web framework. observablehq/stdlib - Observable standard library. Choo - Sturdy 4kb frontend framework. (Web ) Typera - Type-safe routes for Express and Koa. Frourio - Fast and type-safe full stack framework, for TypeScript. (Web ) Svelto - Modular front end framework for modern browsers, with battery included: 100+ widgets and tools. modular - Collection of tools and guidance to enable UI development at scale. (Tweet ) Turbo - Speed of a single-page web application without having to write any JavaScript. (Web ) Fre - Tiny Coroutine framework with Fiber. Glimmer - Fast and light-weight UI components for the web. (Code ) Glimmer VM - Flexible, low-level rendering pipeline for building a "live" DOM from Handlebars templates that can subsequently be updated cheaply when data changes. frint - Modular JavaScript framework for building scalable and reactive applications. Nano Router - Framework agnostic minimalistic router with a focus on named routes. tiny-request-router - Fast, generic and type safe router (match request method and path). Synergy - Tiny runtime library for building web user interfaces. (HN ) dflex - JavaScript Project to Manipulate DOM Elements. morphdom - Fast and lightweight DOM diffing/patching (no virtual DOM needed). Forgo - Ultra-light UI runtime. Makes it super easy to create modern web apps using JSX (like React). Whats Up - Front-end framework based on ideas of streams and fractals. Boost - Collection of type-safe cross-platform packages for building robust server-side and client-side systems. Nostalgie - Opinionated, full-stack, runtime-agnostic framework for building web apps and web pages using react. (Web ) Lumino - Library for building interactive web applications. Anime.js - JavaScript animation engine. popmotion - Functional, reactive animation library. impress.js - Presentation framework based on the power of CSS3 transforms and transitions. Pts - Library for visualization and creative-coding. lax.js - Simple & light weight (<2kb gzipped) vanilla JS plugin to create smooth & beautiful animations when you scroll. Flipping - Library (and collection of adapters) for implementing FLIP transitions. Ola - Smooth animation library for interpolating numbers. react-spring - Spring physics based React animation library. FAT - Web's fastest and most lightweight animation tool. React Easy Flip - Lightweight React library for smooth FLIP animations. AOS - Animate on scroll library. flubber - Tools for smoother shape animations. qoa - Minimal interactive command-line prompts. Unexpected - Extensible BDD assertion toolkit. (Docs ) Fishery - Library for setting up JavaScript objects as test data. pentf - Parallel end-to-end test framework. test-flat - Test framework extension to support resources teardown and cleanup in flat tests. zora - Lightest, yet Fastest JavaScript test runner for nodejs and browsers. Vest - Declarative Validation Testing. Mutik - Tiny (495B) immutable state management library based on Immer. Overmind - Frictionless state management. (Docs ) (HN ) Storeon - Tiny event-based Redux-like state manager for React and Preact. Overstated - React state management library that's delightful to use, without sacrificing performance or scalability. Effector - Reactive state manager. (Awesome ) (Docs ) (effector-storage ) Akita - State Management Tailored-Made for JS Applications. Observable Store - Provides a simple way to manage state in Angular, React, Vue.js and other front-end applications. Cerebral - Declarative state and side effects management solution for popular JavaScript frameworks. Hooksy - State management solution based on react hooks. React Easy State - Simple React state management. Made with ❤️ and ES6 Proxies. wana - Easy observable state for React. Recoil - Experimental set of utilities for state management with React. (Web ) (Video ) (Reddit ) (Rewriting from scratch ) (Recoilize - Recoil developer tool ) State Designer - JavaScript and TypeScript library for managing the state of a user interface. Fluxible - Pluggable container for universal flux applications. Logux State - Tiny state manager with CRDT, cross-tab, and Logux support. Statery - Surprise-Free State Management. Designed for React with functional components. sql.js - SQLite compiled to JavaScript. Allows you to create a relational database and query it entirely in the browser. (Docs ) (HN ) SQigiL - Postgres SQL template string for Javascript. Postgrest JS - Isomorphic JavaScript client for PostgREST. Connect PG Simple - Simple, minimal PostgreSQL session store for Express/Connect. micro github - Tiny microservice that makes adding authentication with GitHub to your application easy. pico.js - Face detection library in 200 lines of JavaScript. mdxc - Use React Components within Markdown. ReLaXeD - Create PDF documents using web technologies. (Examples ) Dragula - Drag and drop so simple it hurts. Hammer.js - Multi-touch gestures. emittery - Simple and modern async event emitter. Xstate - State machines and statecharts for the modern web. (State Machines Workshop ) xstate-component-tree - Build a tree of UI components based on your state chart. virtual-scroller - Maps a provided set of JavaScript objects onto DOM nodes, and renders only the DOM nodes that are currently visible, leaving the rest "virtualized". jSPDF - Client-side JavaScript PDF generation for everyone. ForgJS - JavaScript lightweight object validator. faker.js - Generate massive amounts of realistic fake data in Node.js and the browser. arg - Simple argument parsing. fbt - JavaScript Internationalization Framework. fuzzysearch - Tiny and blazing-fast fuzzy search in JavaScript. normalizr - Normalizes nested JSON according to a schema. FBJS - Collection of utility libraries used by other Facebook JS projects. Uppy - Next open source file uploader for web browsers. (Web ) ScrollReveal - Animate elements as they scroll into view. Shiny - Add shiny reflections to text, backgrounds, and borders on devices that support the DeviceMotion event. Hotkey Behavior - Trigger a action on element when keyboard hotkey is pressed. Bili - Makes it easier to bundle JavaScript libraries. Memoizee - Complete memoize/cache solution for JavaScript. Immer - Create the next immutable state by mutating the current one. FlexSearch - Web's fastest and most memory-flexible full-text search library with zero dependencies. cofx - Node and javascript library that helps developers describe side-effects as data in a declarative, flexible API. Mercury Parser - Extracts the bits that humans care about from any URL you give it. Refract - Harness the power of reactive programming to supercharge your components. MemJS - Memcache client for node using the binary protocol and SASL authentication. memfs - In-memory filesystem with Node's API. Accounts - Fullstack authentication and accounts-management for GraphQL and REST. Cleave.js - Format input text content when you are typing... Unistore - Tiny 350b centralized state container with component bindings for Preact & React. Ramda - Practical functional library for JavaScript programmers. fromfrom - JS library written in TS to transform sequences of data from format to another. Editor.js - Block-styled editor with clean JSON output. ijk - Transforms arrays into virtual DOM trees. Cleave.js - Format input text content when you are typing. Oboe.js - Streaming approach to JSON. Oboe.js speeds up web applications by providing parsed objects before the response completes. Choices.js - Vanilla JS customisable select box/text input plugin. Shepherd - Guide your users through a tour of your app. object-cull - Create a copy of an object with just the bits you actually need. Sigma - JavaScript library dedicated to graph drawing. interact.js - JavaScript drag and drop, resizing and multi-touch gestures with inertia and snapping for modern browsers. flru - Tiny (215B) and fast Least Recently Used (LRU) cache. Yup - Dead simple Object schema validation. Lerna - Tool for managing JavaScript projects with multiple packages. WikiJs - Wikipedia Interface for Node.js. virtual-audio-graph - Library for declaratively manipulating the Web Audio API. deep-object-diff - Deep diffs two objects, including nested structures of arrays and objects, and returns the difference. Snarkdown - Snarky 1kb Markdown parser written in JavaScript. Terser - JavaScript parser, mangler, optimizer and beautifier toolkit for ES6+. AppAuthJS - JavaScript client SDK for communicating with OAuth 2.0 and OpenID Connect providers. expr-eval - Mathematical expression evaluator in JavaScript. robust-predicates - Fast robust predicates for computational geometry in JavaScript. Sanctuary - JavaScript functional programming library inspired by Haskell and PureScript. modali - Delightful modal dialog component for React, built from the ground up to support React Hooks. Tweakpane - Compact GUI for fine-tuning parameters and monitoring value changes. crocks - Collection of well known Algebraic Data Types for your utter enjoyment. Just - Library of zero-dependency npm modules that do just do one thing. nanoid - Tiny (139 bytes), secure, URL-friendly, unique string ID generator for JavaScript. debug - Tiny JavaScript debugging utility modelled after Node.js core's debugging technique. Works in Node.js and web browsers. roughViz.js - Reusable JavaScript library for creating sketchy/hand-drawn styled charts in the browser. Mitt - Tiny 200 byte functional event emitter / pubsub. RequireJS - File and module loader for JavaScript. Zero - 3D graphics rendering pipeline. Implemented in JavaScript. Run in a terminal. xstate-viz - Visualize state charts. htmr - Simple and lightweight (< 2kB) HTML string to React element conversion library. react-jsx-parser - React component which can parse JSX and output rendered React Components. Static Land - Specification for common algebraic structures in JavaScript based on Fantasy Land. sorted-queue - Sorted queue, based on an array-backed binary heap. polendina - Non-UI browser testing for JavaScript libraries from the command-line. agadoo - Check whether a package is tree-shakeable. Fielder - React form library which adapts to change. lemonad - Functional programming library for JavaScript. An experiment in elegant JS. Mockttp - Lets you quickly & reliably test HTTP requests & responses in JavaScript, in both Node and browsers. Flowy - Minimal javascript library to create flowcharts. d3-dag - Layout algorithms for visualizing directed acyclic graphs. renature - Physics-based animation library for React focused on modeling natural world forces. Morphism - Do not repeat anymore your objects transformations. Tonic - Stable, Minimal, Auditable, Build-Tool-Free, Low Profile Component Framework. Quiet.js - Transmit data with sound using Web Audio -- Javascript binding for libquiet. Bindery - Library for designing printable books with HTML and CSS. Wretch - Tiny wrapper built around fetch with an intuitive syntax. Virt.js - Free collection of useful standard devices, that can be used to power various engine that makes use of the exposed interfaces. Path-to-RegExp - Turn a path string such as /user/:name into a regular expression. Bacon.js - Functional reactive programming library for TypeScript and JavaScript. GGEditor - Visual graph editor based on G6 and React. Arbor - Graph visualization library using web workers and jQuery. (Web ) fsm-as-promised - Finite state machine library using ES6 promises. x-spreadsheet - Web-based JavaScript（canvas）spreadsheet. IsoCity - Isometric city builder in JavaScript. car - Simple 2d car physics with JavaScript. (HN ) Picomatch - Blazing fast and accurate glob matcher written in JavaScript. react-isomorphic-data - Easily fetch data in your React components, with similar APIs to react-apollo. klona - Tiny (228B) and fast utility to "deep clone" Objects, Arrays, Dates, RegExps, and more. ScrollMagic - JavaScript library for magical scroll interactions. GoJS - JavaScript and TypeScript library for building interactive diagrams and graphs. Rete - JavaScript framework for visual programming and creating node editor. (HN ) Pre3d - JavaScript 3d rendering engine. dancer.js - High-level audio API, designed to make sweet visualizations. model-viewer - Easily display interactive 3D models on the web and in AR. Spars - General toolkit for creating interactive web experiences. NeuroJS - JavaScript deep learning and reinforcement learning library. Hareactive - Purely functional reactive programming library. Mirage JS - Client-side server to develop, test and prototype your JavaScript app. dfa - State machine compiler with regular expression style syntax. Jtree - Tree Notation TypeScript/Javascript library. Hydra - Livecoding networked visuals in the browser. p-queue - Promise queue with concurrency control. gsheets - Get public Google Sheets as plain JavaScript/JSON. alga-ts - Algebraic graphs implementation in TypeScript. Chart.js - Simple HTML5 Charts using the tag. (Awesome ) on-change - Watch an object or array for changes. clean-set - Deep assignment alternative to the object spread operator and Object.assign. Search Query Syntax Parser Uppload - Better JavaScript image uploader with 30+ plugins. pino - Super fast, all natural JSON logger. Orbit - Composable data framework for ambitious web applications. panzoom - Universal pan and zoom library (DOM, SVG, Custom). intl-tel-input - JavaScript plugin for entering and validating international telephone numbers. three.js - JavaScript 3D library. shortid - Short id generator. Url-friendly. Non-predictable. Cluster-compatible. styx - Derives a control flow graph from a JavaScript AST. Crossfilter - JavaScript library for exploring large multivariate datasets in the browser. SiriWave - Apple Siri wave-form replicated in a JS library. Shades - Lodash-inspired lens-like library for Javascript. mxGraph - Fully client side JavaScript diagramming library. cacache - Node.js library for managing local key and content address caches. enhanced-resolve - Offers an async require.resolve function. It's highly configurable. notevil - Evalulate javascript like the built-in javascript eval() method but safely. react-digraph - Library for creating directed graph editors. bent - Functional JS HTTP client (Node.js & Fetch) w/ async await. CLUI - Collection of JavaScript libraries for building command-line interfaces with context-aware autocomplete. cosha - Colorful shadows for your images. Rambda - Faster and smaller alternative to Ramda. MathJax - Open-source JavaScript display engine for LaTeX, MathML, and AsciiMath notation that works in all modern browsers. (Web ) (HN ) Litepicker - Date range picker - lightweight, no dependencies. core-js - Modular standard library for JavaScript. timeago.js - Nano library (less than 2 kb) used to format datetime with *** time ago statement. eg: '3 hours ago'. Serialize JavaScript - Serialize JavaScript to a superset of JSON that includes regular expressions, dates and functions. Tippy.js - Tooltip, popover, dropdown, and menu library. howler.js - JavaScript audio library for the modern web. date-fns - Modern JavaScript date utility library. Midi - Convert MIDI into Tone.js-friendly JSON. face-api.js - JavaScript API for face detection and face recognition in the browser and nodejs with tensorflow.js. Spotlight - Search widget for your web API. Fuse - Lightweight fuzzy-search, in JavaScript. Xterm.js - Terminal for the web. Change Case - Convert strings between camelCase, PascalCase, Capital Case, snake_case and more. ChronoGraph - Reactive, graph-based, computation engine. Sprotty - Diagramming framework for the web. prerender.js - Loads pages quickly on any browser. on-finished - Execute a callback when a request closes, finishes, or errors. ColorFns - Modern JavaScript color utilities library. grapheme-splitter - JavaScript library that breaks strings into their individual user-perceived characters. Web Animations - JavaScript implementation of the Web Animations API. p-limit - Run multiple promise-returning & async functions with limited concurrency. Highcharts JS - JavaScript charting library based on SVG. μPlot - Small, fast chart for time series, lines, areas, ohlc & bars. Baobab - JavaScript & TypeScript persistent and optionally immutable data tree with cursors. emoji-regex - Regular expression to match all Emoji-only symbols as per the Unicode Standard. MerkleTree.js - Construct Merkle Trees and verify proofs in JavaScript. Snabbdom - Virtual DOM library with focus on simplicity, modularity, powerful features and performance. Thwack - Tiny modern data fetching solution. Regenerate - Generate JavaScript-compatible regular expressions based on a given set of Unicode symbols or code points. Crank.js - Write JSX-driven components with functions, promises and generators. (Article ) (Reddit ) (HN ) redaxios - Axios API, as an 800 byte Fetch wrapper. Math.js - Extensive math library for JavaScript and Node.js. pixelmatch - Smallest, simplest and fastest JavaScript pixel-level image comparison library. quilt - Loosely related set of packages for JavaScript / TypeScript projects at Shopify. jsondiffpatch - Diff & patch JavaScript objects. RVal - Minimalistic transparent reactive programming library. orbit-controls - Generic controls for orbiting a target in 3D. estree-walker - Traverse an ESTree-compliant AST. Jitsi Meet API library - Can use Jitsi Meet API to create Jitsi Meet video conferences with a custom GUI. isomer - Simple isometric graphics library for HTML5 canvas. Schema to Yup schema Mordred - Source data from anywhere, for Next.js, Nuxt.js, Eleventy and many more. ASScroll - Hybrid smooth scroll setup that combines the performance gains of virtual scroll with the reliability of native scroll. Gallery - Light, responsive, and performant JavaScript gallery. Logux Server - Build own Logux server or make proxy between WebSocket and HTTP backend on any language. @expo/results - Efficient, standards-compliant library for representing results of successful or failed operations. Emojibase - Collection of lightweight, up-to-date, pre-generated, specification compliant, localized emoji JSON datasets, regex patterns, and more. serve-favicon - Node.js middleware for serving a favicon. download - Download and extract files. color2k - Color parsing and manipulation lib served in 2kB or less. Sandstorm - Open source platform for self-hosting web apps. (Code ) transformation-matrix - JS isomorphic 2D affine transformations written in ES6 syntax. Muuri - JavaScript layout engine that allows you to build all kinds of layouts and make them responsive, sortable, filterable, draggable and/or animated. Split - Unopinionated utilities for resizeable split views. Parallax Engine - Reacts to the orientation of a smart device. fastq - Fast, in memory work queue. ac-colors - Reactive JavaScript color library that can freely convert color formats. sonic-boom - Extremely fast utf8 only stream implementation. Rough Notation - Small JavaScript library to create and animate annotations on a web page. (HN ) SqueakJS - Squeak VM for the Web and Node.js. (Web ) fit-textarea - Automatically expand a to fit its content, in a few bytes. NanoPop - Ultra Tiny, Opinionated Positioning Engine. (Web ) Angelfire - Lets you quickly build right-click-enabled context menus and drop-down menus for any element on your webpage. csv-parser - Streaming csv parser inspired by binary-csv that aims to be faster than everyone else. updeep - Easily update nested frozen objects and arrays in a declarative and immutable manner. Hull.js - JavaScript library that builds concave hull by set of points. StegCloak - Hide secrets with invisible characters in plain text securely using passwords. p-min-delay - Delay a promise a minimum amount of time. match-when - Pattern matching for modern JavaScript. NumJs - Like NumPy, in JavaScript. spect - Reactive aspect-oriented web-framework. js-cid - CID implementation in JavaScript. js-ipld-block - Implementation of the Block data structure in JavaScript. wildcard-api - Functions as API. bpmn-js - BPMN 2.0 rendering toolkit and web modeler. fit-curve - JavaScript implementation of Philip J. Schneider's "Algorithm for Automatically Fitting Digitized Curves" from the book "Graphics Gems". clean-deep - Remove falsy, empty or nullable values from objects. regular-table - Regular library, for async and virtual data models. Stimulus - Modest JavaScript framework for the HTML you already have. (Web ) bigpicture.js - Library that allows infinite panning and infinite zooming in HTML pages. (Web ) Tragopan - Minimal dependency-free pan/zoom library. (HN ) Deakins - Small Canvas 2D Camera. Turbolinks - Makes navigating your web application faster. CindyJS - Framework to create interactive (mathematical) content for the web. (Web ) (HN ) axios - Promise based HTTP client for the browser and nodeJS. astray - Walk an AST without being led astray. vnopts - Validate and normalize options. canvas confetti - On-demand confetti gun. (Docs ) Graphlib - JavaScript library that provides data structures for undirected and directed multi-graphs along with algorithms that can be used with them. Dagre - JavaScript library that makes it easy to lay out directed graphs on the client-side. ecsy - Highly experimental Entity Component System framework implemented in javascript, aiming to be lightweight, easy to use and with good performance. (Docs ) Object Visualizer - Visualize the JSON object to the DOM. (HN ) Reach Schema - Functional schema-driven JavaScript object validation library. @cycle/callbags - Set of commonly used stream operators implemented as callbags with Typescript and ES modules. umbrella - Broadly scoped ecosystem & mono-repository of ~135 TypeScript projects for functional, data driven development. HTM - JSX-like syntax in plain JavaScript - no transpiler necessary. NativeScript - Framework for building native iOS and Android apps using JavaScript and CSS. schema-dts - JSON-LD TypeScript types for Schema.org vocabulary. flatpickr - JS date time picker. superjson - Safely serialize JavaScript expressions to a superset of JSON, which includes Dates, BigInts, and more. lazy-collections - Collection of fast and lazy operations. Perfect Arrows - Set of functions for drawing perfect arrows between points and shapes. Autocomplete.js - Fast and full-featured autocomplete library. urlcat - URL builder library for JavaScript. (Docs ) Diagram Maker - Library to display an interactive editor for any graph-like data. (Docs ) (HN ) js-coroutines - 60fps with JavaScript Coroutines for idle processing and animation. Transducist - Ergonomic JavaScript/TypeScript transducers for beginners and experts. decimal.js - Arbitrary-precision Decimal type for JavaScript. Constant-Time JavaScript - Constant-time algorithms written in TypeScript. SheetJS - Spreadsheet Data Toolkit. Read, edit, and export spreadsheets. Works in web browsers and servers. (Web ) Z - Pattern Matching for JavaScript. (Web ) Graphology - Robust & multipurpose Graph object for JavaScript & TypeScript. (Docs ) weak-napi - Make weak references to JavaScript Objects. nestie - Tiny (211B) and fast utility to expand a flattened object. Mock.js - Simulation data generator. Detect features - Detect and report browser and hardware features. JSZip - Create, read and edit .zip files with JavaScript. Classnames - Simple javascript utility for conditionally joining classNames together. cx - Concatenate your classes (with shortcuts). Defer - Tiny, type-safe, JavaScript-native defer implementation. freshie - Fresh take on building universal applications with support for pluggable frontends and backends. Luckysheet - Online spreadsheet like excel that is powerful, simple to configure, and completely open source. (Docs ) noUiSlider - Lightweight JavaScript range slider. QRCode.js - Cross-browser QRCode generator for JavaScript. (Web ) HyperScript - Create HyperText with JavaScript, on client or server. hyperscript-helpers - Terse syntax for hyperscript. EnlighterJS - Open source syntax highlighter written in pure javascript. eslisp - S-expression syntax for JavaScript, with Lisp-like hygienic macros. Minimal core, maximally customisable. Smoldash - Tiny lodash alternative built for the modern web. TypewriterJS - Simple yet powerful native javascript plugin for a cool typewriter effect. sse.js - Flexible Server Side Events source for JavaScript. Arkit - Visualises JavaScript, TypeScript and Flow codebases as meaningful and committable architecture diagrams. (Web ) jsii - Allows code in any language to naturally interact with JavaScript classes. proxy-memoize - Intuitive magical memoization library with Proxy and WeakMap. (Tweet ) CosmJS - Modular library consisting of multiple packages to power web experiences. Arwes - Futuristic Sci-Fi and Cyberpunk Graphical User Interface Framework for Web Apps. (Web ) psl (Public Suffix List) - JavaScript domain name parser based on the Public Suffix List. invariant-packages - Packages for working with invariant(condition, message) assertions. evt - EventEmitter's typesafe replacement. webscan - Browser-based network scanner & local-IP detection. Pill - Add dynamic content loading to static sites with only 1 KiB of JS. fast-deep-equal - Fastest deep equal with ES6 Map, Set and Typed arrays support. preview-card - Customizable social media preview image. egjs-flicking - Easy-to-use and performant infinite carousel. SSE-Z - Slim, easy-to-use wrapper around EventSource. DefinitelyExported - Community-defined export maps for popular npm packages. jsdiff - JavaScript text differencing implementation. HyperFormula - Open source, spreadsheet-like calculation engine. fast-json-stringify - Significantly faster than JSON.stringify() for small payloads. isbot - JavaScript module that detects bots/crawlers/spiders via the user agent. valtio - Makes proxy-state simple. pica - High quality image resize in browser. Planton - Database-agnostic task scheduler. mime-types - JavaScript content-type utility. match-sorter - Simple, expected, and deterministic best-match sorting of an array in JavaScript. Fetch Event Source - Better API for making Event Source requests, with all the features of fetch(). rafz - Coordinate requestAnimationFrame calls across your app and/or libraries. p-state - Inspect the state of a promise. v86 - x86 virtualization in JavaScript, running in your browser and NodeJS. (Web ) Notyf - Minimalistic, responsive, vanilla JavaScript library to show toast notifications. Moveable - Draggable, Resizable, Scalable, Rotatable, Warpable, Pinchable, Groupable, Snappable. Execa - Process execution for humans. quick-lru - Simple “Least Recently Used” (LRU) cache. Deepdash - Tree traversal library written in Underscore/Lodash fashion. (Docs ) Nano Delay - Tiny (25 bytes) Promise wrapper around setTimeout. ES Module Lexer - Low-overhead lexer dedicated to ES module parsing for fast analysis. keez - Frictionless hotkey handling for browsers. Zet - Set() as it should be. Ketting - Hypermedia client for JavaScript. yocto-queue - Tiny queue data structure. Nano JSX - Lightweight 1kB JSX library. (Web ) Effects.js - Algebraic effects in javascript with scoped handlers, multishot delimited continuations, stack safety and do notation. flatten-js - JavaScript library for 2d geometry. is-retry-allowed - Check whether a request can be retried based on the error.code. backfill - JavaScript caching library for reducing build time. S-Libs - Collection of libraries for any of JS, RxJS, or Angular. watchpack - Wrapper library for directory and file watching. async-tag - Resolves template literals tag values before applying a generic tag. serialize-error - Serialize/deserialize an error into a plain object. errorstacks - Tiny library to parse error stack traces. Ape-ECS - Entity-Component-System library for JavaScript. rrule.js - JavaScript library for working with recurrence rules for calendar dates as defined in the iCalendar RFC and more. (Demo ) scroller - Super-tiny library for your scrollytelling needs. Isomorphic DOMPurify - Makes it possible to use DOMPurify on server and client in the same way. navaid - Navigation aid (aka, router) for the browser in 850 bytes. glob-to-regexp - Convert a glob to a regular expression. cmap - Interactive visualization library for concept map. lezer-tree - Incremental GLR parser intended for use in an editor or similar system. matchit - Quickly parse & match URLs. acorn - Tiny, fast JavaScript parser, written completely in JavaScript. jsesc - Given some data, jsesc returns the shortest possible stringified & ASCII-safe representation of that data. fastjson - Single-tweet, standards-compliant, high-performance JSON stack. grfn - Tiny (~400B) utility that executes a dependency graph of async functions as concurrently as possible. Nunjucks - Powerful templating engine with inheritance, asynchronous control, and more. (Web ) Behavior3JS - Structures and algorithms that assist you in the task of creating intelligent agents for your game or application. qs - Querystring parser with nesting support. Exifer - Small module that read JPEG/TIFF meta-data. jsVideoUrlParser - JavaScript parser to extract information like provider, channel, id, start time from YouTube, Vimeo, Dailymotion, Twitch,... urls. TypeDI - Dependency injection tool for TypeScript and JavaScript. ibridge - Tiny, promise based, type safe library for easy, bidirectional and secure iframe communication. Monio - Async-capable IO monad for JS. Total.js - Excellent and stable server-side Node.js framework, client-side library for creating web applications with more than 230 UI components for free. memoize-one - Memoization library which only remembers the latest invocation. pjson - JSON stream parser for Go. InternMap - Map and Set with automatic key interning. geometry-processing-js - Fast, general-purpose framework for geometry processing on the web. Iterplus - Best of Rust/Haskell/Python iterators in JavaScript. SmolScroll - Tiny, flexible scroll listener with React support. Observable parser Robot - Functional, immutable Finite State Machine library. (Docs ) Enmap - Enhanced Map structure with additional utility methods. Honeycomb - Create hex grids easily, in node or the browser. chunkify - Split an iterable into evenly sized chunks. wobble - Tiny spring physics micro-library that models a damped harmonic oscillator. tmp-cache - Least-recently-used cache in 35 lines of code. static-eval - Evaluate statically-analyzable expressions. Sparse Octree - Sparse, pointer-based octree data structure. Signature Pad - JavaScript library for drawing smooth signatures. dom-to-image-retina - dom-to-image but generates high-resolution images. loglevel - Minimal lightweight logging for JavaScript, adding reliable log level methods to wrap any available console.log methods. Perfect Freehand - Draw perfect freehand lines. Alo - Full-fledged state management. (Docs ) Form-Data - Library to create readable "multipart/form-data" streams. Can be used to submit forms and file uploads to other web applications. conf - Simple config handling for your app or module. gifenc - Fast and lightweight pure-JavaScript GIF encoder. tldts - Blazing Fast URL Parsing. Barba.js - Easy-to-use library that helps you create fluid and smooth transitions between your website's pages. Shuffle.js - Categorize, sort, and filter a responsive grid of items. (Web ) stdlib - Standard library for JavaScript and Node.js. (Web ) gensync - Allows users to use generators in order to write common functions that can be both sync or async. monet.js - Monadic types library for JavaScript. VivaGraph - Graph drawing library for JavaScript. Crochet - Small engine for story-driven games. diary - Zero-dependency, fast logging library for both Node and Browser. tinydate - Tiny reusable date formatter. FingerprintJS - Browser fingerprinting library with the highest accuracy and stability. Antiutils - TypeScript/JavaScript utilities for those who don't like utilities.
