JSPM

An isomorphic client library for the text analysis features in the Azure Cognitive Language Service.

Useragent analysis tool.

Easy-to-use and high-performance JavaScript library for data analysis. Works with tabular and geospatial data.

SDK for WorkAI API - AI-powered code analysis with WorkCoins billing system

WebAssembly-powered temporal analysis toolkit - DTW, LCS, scheduling, and meta-learning

A tool for geotech analysis.

Static analysis to detect browser compatiblity issues in JavaScript and HTML.

A tool for statistical analysis.

Eye Analysis - Browser-based eye tracking and screen recording library for research and experiments

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Complete technical analysis suite - 189 indicators, risk metrics, pattern recognition. Native + WASM backends for Node.js AND Browser

High-performance technical analysis library - Native + WASM backends, 158+ TA-Lib compatible indicators, works in Node.js AND Browser

A tool for geotech analysis.

sitespeed.io is an open-source tool for comprehensive web performance analysis, enabling you to test, monitor, and optimize your website’s speed using real browsers in various environments.

A JavaScript library for intelligent network-aware data compression with real-time performance analysis

A powerful suite of 36 development and analysis tools for browser automation and web application analysis.

Lightweight yet powerful audio analysis library

Smart video analysis in 3 lines of code. TypeScript-first, privacy-focused, zero-cost.

A tool for data PCA(Principle Component Analysis) and cluster(K-Means & K-Medoids).

Identifyzer is a lightweight JavaScript library for creating unique browser fingerprints, enabling secure user identification and behavior analysis.

rslint core library

MCP server for browser automation, inspection, monitoring, and performance analysis

Array#isArray for older browsers

The string_decoder module from Node core

Browser-friendly inheritance fully compatible with standard node.js inherits()

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Converts a source-map from/to different formats and allows adding/changing properties.

Node.js Buffer API, for the browser

Promise based HTTP client for the browser and node.js

ES2015 `Object.assign()` ponyfill

The Node.js `util.deprecate()` function with browser support

Open stuff like URLs, files, executables. Cross-platform.

Determine if an object is a Buffer

OpenTelemetry Core provides constants and utilities shared by all OpenTelemetry SDK packages.

ContentSafety Service

An ES2015 mostly-spec-compliant `Reflect.getPrototypeOf` sham/polyfill/replacement that works in as many engines as possible

Base class for node which OpenTelemetry instrumentation modules extend

A powerful suite of 36 development and analysis tools for browser automation and web application analysis.

Public logs API for OpenTelemetry

JWA, JWS, JWE, JWT, JWK, JWKS for Node.js, Browser, Cloudflare Workers, Deno, Bun, and other Web-interoperable runtimes

the path module from node core for browsers

A library for parsing IPv4 and IPv6 IP addresses in node and the browser.

Lightweight browser detector

Public API for OpenTelemetry

Convert a typed array to a Buffer without a copy

An isomorphic client library for the Azure Text Analytics service.

Universal WHATWG Fetch API for Node, Browsers and React Native

Library to work against complex domain names, subdomains and URIs.

Microsoft Azure SDK for JavaScript - Aborter

The assert module from Node.js, for the browser.

Get the bundle identifier of the default browser (macOS). Example: com.apple.Safari

High performance (de)compression in an 8kB package

the stream module from node core for browsers

atob for Node.JS and Linux / Mac / Windows CLI (it's a one-liner)

Check which JavaScript environment your code is running in at runtime: browser, Node.js, Bun, etc

Detect Browser, Engine, OS, CPU, and Device type/model from User-Agent & Client Hints data. Supports browser & node.js environment

MCP (Model Context Protocol) server for browser tools integration

Get the default browser

JavaScript library for DOM operations

Parse and stringify URL query strings

A simple, lightweight JavaScript API for handling cookies

HTML5 `FormData` for Browsers and Node.

JavaScript's functional programming helper library.

Minimal lightweight logging for JavaScript, adding reliable log level methods to any available console.log methods

Random number generator for browsers and node.js

timers module for browserify

node's constants module for the browser

Parse milliseconds into an object

Isomorphic implementation of WebSocket

Better `os.arch()` for node and the browser -- detect OS architecture

A better opn. Reuse the same tab on Chrome for 👨‍💻.

Decode JWT tokens, mostly useful for browser applications.

Node's domain module for the web browser. This is merely an evented try...catch with the same API as node, nothing more.

the tty module from node core for browsers

vm module for the browser

Toggle current selected content in browser

https module compatability for browserify

A polyfill for the Resize Observer API

JSON without touching any globals

Copy stuff into clipboard using JS with fallbacks

memlab API

Microsoft Azure SDK for JavaScript - Logger

Compare semver version strings to find greater, equal or lesser.

OpenTelemetry Collector Trace Exporter allows user to send collected traces to the OpenTelemetry Collector

Isomorphic client library for supporting long-running operations in node.js and browser.

An alias package for `crypto.randomBytes` in Node.js and/or browsers

Cypress is a next generation front end testing tool built for the modern web

Promisify an event by waiting for it to be emitted

Get a KeyboardEvent.key-style string from an event

OpenTelemetry Collector Metrics Exporter allows user to send collected metrics to the OpenTelemetry Collector

Lazy assertions without performance penalty

Converts a Web-API readable-stream into a Node.js readable-stream.

resolve which handles browser field support in package.json

btoa for Node.JS (it's a one-liner)

OpenTelemetry Zipkin Exporter allows the user to send collected traces to Zipkin.

A lightweight, fast JavaScript/TypeScript library for detecting AI-generated text using advanced linguistic analysis. Works in Node.js, React, and browser environments with zero dependencies.

Framework-agnostic, micro-library for getting stack traces in all environments

OpenTelemetry Collector Logs Exporter allows user to send collected logs to the OpenTelemetry Collector

Apple's property list parser/builder for Node.js and browsers

Tiny and elegant HTTP client based on the Fetch API

OAuth 2 / OpenID Connect Client API for JavaScript Runtimes

JavaScript SVG parser and renderer on Canvas.

Cross-browser `CustomEvent` constructor

LRU and FIFO caches for Client or Server

Microsoft Azure Storage SDK for JavaScript - Blob

🔥 An extremely fast and efficient LRU cache for JavaScript with high compatibility (including Browsers).

Check if a value is a natural number

React's ExecutionEnvironment module extracted for use in other packages & components

Serializes any DOM node into a String

Low-Level OAuth 2 / OpenID Connect Client API for JavaScript Runtimes

Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. It includes many web standards from WHATWG DOM and HTML.

(recursive)? merging of (cloned)? objects.

Lightweight and performant natural sorting of arrays and collections by differentiating between unicode characters, numbers, dates, etc.

A package that contains an array of every single file extension there is for binary files

Simple wrapper for cross-browser usage of the JavaScript Fullscreen API, which lets you bring the page or any element into fullscreen.

A package that contains an array of every single file extension there is for text files

A tool to get browser's scrollbars width.

Plugin for loglevel message prefixing

HKDF with no dependencies using runtime's native crypto

A JavaScript library to zip and unzip files in the browser, Deno and Node.js

Isomorphic WebSocket

Tests if ES6 @@toStringTag is supported.

Isomorphic client library for Azure KeyVault's keys.

Extends Chai with assertions about promises.

Check whether operating system CPU architecture is 64-bit or 32-bit (Supports browsers)

Session recorder for Splunk Observability

Tests if ES6 Symbol is supported.

Topological sort of directed acyclic graphs (like dependecy lists)

Dynamic script loading for browser

Determine if a filename and/or buffer is text or binary. Smarter detection than the other solutions.

Adds console.table method that prints an array of objects as a table in console

Smallest/simplest possible means of using btoa with both Node and browserify

Unpack a browser type and version from the useragent string

browser-side require() the node way

A tiny (230B) and fast UUID (v4) generator for Node and the browser

Array#filter for older browsers.

Check in which environment the code is running - browser/node.js/webworker/jsdom/deno

XMLHttpRequest emulation for node.js

Provides access to the system's web browser and supports handling redirects. On iOS, it uses SFSafariViewController or ASWebAuthenticationSession, depending on the method you call, and on Android it uses ChromeCustomTabs. As of iOS 11, SFSafariViewControl

Image structural similarity (SSIM). In TypeScript/JavaScript. For browser/server.

Creates an async iterator for a variety of inputs in the browser and node. Supports fetch, node-fetch, and cross-fetch

DOMParser.parseFromString for XML with IE8 fallback

Flmngr file manager (Local disk / Amazon S3 / Azure Blob)

Get the paths of edge browser easily

JavaScript SDK for Go Analysis Server - Easy event tracking and analytics

Browser compatibility data provided by MDN Web Docs

Library to work against complex domain names, subdomains and URIs. Only contains ICANN section.

Simple JS stack with auto run for node and browsers

Node standard library for browser.

pack node-style source files from a json stream into a browser bundle

walk the dependency graph to generate json output that can be fed into browser-pack

Detect device type and render your component according to it

A high-performance, lightweight LRU cache. Built for developers who need fast caching without compromising on features.

Super light and fast Extensible ES6+ events and EventEmitters for Node and the browser. Easy for any developer level, use the same exact code in node and the browser. No frills, just high speed events!

sort module-deps output for deterministic browserify bundles

Detect default web browser of the current user, cross-platform (Win/Lin/Mac)

Minimal JavaScript module loader

Analyze and debug space usage through source maps

Light-weight EventEmitter (less than 1KB when gzipped)

Create a MD5 hash with hex encoding

File manager plugin for CKEditor 5

Extends Chai with assertions for the Sinon.JS mocking framework.

Smallest/simplest possible means of using atob with both Node and browserify

Promptbook: Turn your company's scattered knowledge into AI ready books

Browser port of the Node.js 'request' package

Mouse wheel normalization across multiple multiple browsers.

Tiny local JSON database for Node, Electron and the browser

Fastest, most accurate & effecient user agent string parser, uses Browserscope's research for parsing

Cross Platform implementation of the GitLab API

Isomorphic client Runtime for Typescript/node.js/browser javascript client libraries generated using AutoRest

A client for working with the BrowserStack APIs.

Check version ranges like `>=N` and `X || Y || Z` with support for Node.js, Web Browsers, Deno, and TypeScript.

HMAC-based (HOTP) and Time-based (TOTP) One-Time Password library

OpenTelemetry instrumentation for fetch http client in web browsers

Isomorphic client library for Azure KeyVault's secrets.

Test whether value is error object

Browser-native audio analysis library with 300+ functions, enhanced BPM detection, and dual demo experience (Astro + HTML BPM demo)

`[].map(f)` for older browsers

Logger Utils

Check if mobile browser.

Give your JS App some Backbone with Models, Views, Collections, and Events.

tap-producing test harness for node and browsers

OpenTelemetry instrumentation for XMLHttpRequest http client in web browsers

Cross browser Speech Synthesis

Lint browser compatibility of API used

TaffyDB is an opensouce library that brings database features into your JavaScript applications.

Simple JS queue with auto run for node and browsers

A generated SDK for ResourceManagementClient.

An extended Error class that envelops a parent error, such that the stack trace contains the causation

Detect Browser, Engine, OS, CPU, and Device type/model from User-Agent data. Supports browser & node.js environment

Browser fingerprinting library with the highest accuracy and stability

provides locking mechanism to sync across browser tabs

Open a URL via the operating system (http: in default browser, mailto: in mail client etc.

A Minimalistic Wrapper for IndexedDB

A function to get the scrolling parent of an html element.

strings comparison matchers for chai

watch mode for browserify builds

Javascript audio library for the modern web.

support for asynchronous development with a Promise based task Scheduler, several different Promise implementations (synchronous, idle, asynchronous and native runtime wrappers), await helpers, and aliases all built and tested using TypeScript.

A generated SDK for WebSiteManagementClient.

The official Fullstory browser SDK

Comprehensive TypeScript/JavaScript utility library with cross-environment support (Node.js, browser, web worker) providing helper functions, polyfills (ES5-ES2023), type checking utilities, and optimized implementations for better minification and code r

Environment utilities

the part of vue-inbrowser-compiler-utils that contains no vue dependency

Detect default web browser of the current user, cross-platform (Win/Lin/Mac)

Oboe.js reads json, giving you the objects as they are found without waiting for the stream to finish

Lightning fast hash functions for browsers and Node.js using hand-tuned WebAssembly binaries (MD4, MD5, SHA-1, SHA-2, SHA-3, Keccak, BLAKE2, BLAKE3, PBKDF2, Argon2, bcrypt, scrypt, Adler-32, CRC32, CRC32C, RIPEMD-160, HMAC, xxHash, SM3, Whirlpool)

Compress images in the browser

Google's libphonenumber pre-compiled with the closure compiler

Lightweight copy to clipboard for the web

small function to append a query string to a URL

The speed of a single-page web application without having to write any JavaScript

Extend Chai Assertion library with tests for http apis

A modern logging library for Node.js and modern browsers that provides log level mapping to the console

A javascript scrollbar plugin that hides the native scrollbars, provides custom styleable overlay scrollbars, and preserves the native functionality and feel.

Lint CSS for browser support against caniuse database

Copy text to the clipboard in modern browsers (0.2 kB)

Trackter is a lightweight JavaScript library for creating unique browser fingerprints, enabling secure user identification and behavior analysis.

Simple JS queue with auto run for node and browsers

tiny http client for Node and the browser

An AI web browsing framework focused on simplicity and extensibility.

Useragent analysis tool.浏览器分析/浏览器检测/浏览器识别/浏览器判断/UA解析 - 用户代理、操作系统信息

Browser running for Vitest using playwright

Node's path builtin module exposed as dual ESM/CJS and browser-compatible out of the box.

A pure JavaScript client for the tus resumable upload protocol

Cross platform environment variables with process.env, window.name, location.hash and localStorage fallbacks

Disallow features that are unsupported by the browsers that you are targeting

Get the size of an element in pixels, including margins

Check if browser is Firefox

Automatically opens your browser and iOS Simulator to preview Node.js email messages sent with Nodemailer. Made for Forward Email and Lad. Cross-browser and cross-platform email testing.

Small module for fitting a canvas element within the bounds of its parent.

Chromium Binary for Serverless Platforms

Auto mock all localstorage and sessionstorage APIs for your Jest tests

AWS X-Ray ID generator for OpenTelemetry

A generated SDK for AzureAnalysisServices.

Check if a value is a `Blob`

Normalize browsers' default style

A dynamic, browser-based visualization library.

Consistent cross browser mouse wheel movement

It is a lightweight rest client for node.js and the browser

Check if browser is Internet Explorer

Tiny hashing module that uses the native crypto API in Node.js and the browser

Render React components in Vitest Browser Mode

UI utilities

browserify compatible version of the ace editor.

Mouse wheel normalization across multiple multiple browsers.

Manage unstructured data using DataSet. Add, update, and remove data, and listen for changes in the data.

Utility library to determine and normalize Element.scrollLeft behavior

Strictly typed EventTarget that directly extends EventTarget to function as a drop-in replacement. It works with all Event-Types and accounts for basically no additional bundle-size.

Faro instrumentations, metas, transports for web.