JSPM

Tiny local JSON database for Node, Electron and the browser

Lint CSS for browser support against caniuse database

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

A NoSQL document store database for browsers and Node.js.

Addon to Dexie that makes it possible to observe database changes no matter if they occur on other db instance or other window.

an eventually consistent database

Tiny local JSON database for Node, Electron and the browser

Tiny local JSON database for Node, Electron and the browser

AceBase realtime database. Open source firebase alternative for nodejs and browser, with additional features: indexes, geo, fulltext, queries, custom storage, offline usage, synchronization, live data proxies and more

⚡ The fastest and most lightweight open-source VIN decoding library. Fully offline, TypeScript-first, with comprehensive NHTSA VPIC database integration for Node.js, browsers, and Cloudflare Workers.

A Minimalistic Wrapper for IndexedDB

Client to connect to an AceBase realtime database server

Quadstore is a LevelDB-backed RDF graph database / triplestore for JavaScript runtimes (browsers, Node.js, Deno, Bun, ...) that implements the RDF/JS interfaces and supports SPARQL queries and querying across named graphs.

Lite&easy database for browsers based on localStorage.

A lightweight localStorage-based MongoDB-like database for Node.js and browser

Community plugin for native & electron SQLite databases

A type of distributed database built on top of the distributed browser-network

A NoSQL document store database for browsers and Node.js.

Proxified asynchronous API for distributed IndexedDB. Create local or distributed database in the browser for multiplayer games, collaborative software or for the fun of it!

Tiny local JSON database for Node, Electron and the browser

Simple client side storage solution written in TypeScript.

A generated SDK for SqlManagementClient.

Fast & effecient user agent string parser. Uses uap-core (Browserscope) data for parsing. Drop-in replacement for useragent

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

A generic connection string parser/formatter

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

The string_decoder module from Node core

A lightweight and efficient vector database for storing and searching text embeddings in the browser's local storage. The package uses OpenAI's API to generate embeddings for text documents and provides functionality for similarity search, filtering, and

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

Node.js Buffer API, for the browser

Array#isArray for older browsers

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

ES2015 `Object.assign()` ponyfill

Like Lego For Databases

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

A javascript port of Matomo device-detector

Create polls and manage votes with a MongoDB or MySQL database.

A generated SDK for CosmosDBManagementClient.

Determine if an object is a Buffer

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

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

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

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

Public logs API for OpenTelemetry

SQLocal makes it easy to run SQLite3 in the browser, backed by the origin private file system.

Base class for node which OpenTelemetry instrumentation modules extend

Public API for OpenTelemetry

Lint CSS for browser support against caniuse database

A WebSocket-TCP proxy that enables PostgreSQL clients to connect to a Postgres database running in the browser

Universal WHATWG Fetch API for Node, Browsers and React Native

Lightweight browser detector

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

Microsoft Azure SDK for JavaScript - Aborter

High performance (de)compression in an 8kB package

JavaScript's functional programming helper library.

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

the stream module from node core for browsers

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

the path module from node core for browsers

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

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

Convert a typed array to a Buffer without a copy

Get the default browser

A simple, lightweight JavaScript API for handling cookies

Save [CouchDB sequence #s](http://docs.couchdb.org/en/2.1.1/api/database/changes.html#changes-feeds) to a configurable backend. This allows you to resume CouchDB replication from the point where you left off.

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

JavaScript library for DOM operations

HTML5 `FormData` for Browsers and Node.

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

Parse and stringify URL query strings

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

https module compatability for browserify

Random number generator for browsers and node.js

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

JSON without touching any globals

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

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

Parse milliseconds into an object

Decode JWT tokens, mostly useful for browser applications.

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

Isomorphic implementation of WebSocket

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

Microsoft Azure SDK for JavaScript - Logger

the tty module from node core for browsers

timers module for browserify

vm module for the browser

A polyfill for the Resize Observer API

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

Library providing embeddability, multi-tenancy, replication, automatic snapshotting, and branching of SQLite databases at scale.

node's constants module for the browser

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

Lazy assertions without performance penalty

Toggle current selected content in browser

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

Promisify an event by waiting for it to be emitted

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

resolve which handles browser field support in package.json

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

Copy stuff into clipboard using JS with fallbacks

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

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

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

Check if a value is a natural number

Microsoft Azure Storage SDK for JavaScript - Blob

Cross-browser `CustomEvent` constructor

Tiny and elegant HTTP client based on the Fetch API

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

JavaScript SVG parser and renderer on Canvas.

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

OAuth 2 / OpenID Connect Client API for JavaScript Runtimes

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

Get a KeyboardEvent.key-style string from an event

🔥 An extremely fast and efficient LRU cache for JavaScript with high compatibility (including Browsers) — 6.8KB.

Topological sort of directed acyclic graphs (like dependecy lists)

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.

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

Isomorphic WebSocket

Plugin for loglevel message prefixing

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

LRU and FIFO caches for Client or Server

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

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

Dynamic script loading for browser

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

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

browser-side require() the node way

SQLocal makes it easy to run SQLite3 in the browser, backed by the origin private file system.

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

Serializes any DOM node into a String

DOMParser.parseFromString for XML with IE8 fallback

HKDF with no dependencies using runtime's native crypto

An simple, dependency free, require & go node.js and browser database

Universal Storage for KVS.

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

A tool to get browser's scrollbars width.

Simple JS stack with auto run for node and browsers

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

Tests if ES6 @@toStringTag is supported.

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

Tests if ES6 Symbol is supported.

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

Isomorphic client library for Azure KeyVault's keys.

an eventually consistent database

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

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

A generated SDK for CosmosDBForPostgreSQL.

Extends Chai with assertions about promises.

sort module-deps output for deterministic browserify bundles

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

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

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

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

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

A generated SDK for WebSiteManagementClient.

Simple JSON database for node and browser

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

Browser compatibility data provided by MDN Web Docs

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!

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

Get the paths of edge browser easily

Detect device type and render your component according to it

XMLHttpRequest emulation for node.js

Analyze and debug space usage through source maps

Array#filter for older browsers.

Simple JS queue with auto run for node and browsers

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

Create a MD5 hash with hex encoding

Unpack a browser type and version from the useragent string

A client for working with the BrowserStack APIs.

Mouse wheel normalization across multiple multiple browsers.

Node standard library for browser.

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

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

Cross Platform implementation of the GitLab API

tap-producing test harness for node and browsers

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

Check if mobile browser.

OpenTelemetry instrumentation for fetch http client in web browsers

File manager plugin for CKEditor 5

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

OpenTelemetry instrumentation for XMLHttpRequest http client in web browsers

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

A generated SDK for ResourceManagementClient.

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

Minimal JavaScript module loader

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

Simple JS queue with auto run for node and browsers

Isomorphic client library for Azure KeyVault's secrets.

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.

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

Lint browser compatibility of API used

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

Javascript audio library for the modern web.

Browser fingerprinting library with the highest accuracy and stability

The official Fullstory browser SDK

Browser port of the Node.js 'request' package

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

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

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

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

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

Fast, flexible, serverless embedded NoSQL database for modern applications

Usercentrics CMP Browser SDK

Logger Utils

Test whether value is error object

Google's libphonenumber pre-compiled with the closure compiler

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

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

Environment utilities

Promptbook: Run AI apps in plain human language across multiple models and platforms

Lightweight copy to clipboard for the web

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

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

Compress images in the browser

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

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

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

watch mode for browserify builds

strings comparison matchers for chai

Normalize browsers' default style

Database Manager with optional encryption for SQLite in the browser.

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

provides locking mechanism to sync across browser tabs

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

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

Auto mock all localstorage and sessionstorage APIs for your Jest tests

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)

Isomorphic/Universal WHATWG URL API with some support legacy node URL API

UI utilities

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.

A pure JavaScript client for the tus resumable upload protocol

Faro instrumentations, metas, transports for web.

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

Microsoft Azure Storage SDK for JavaScript - Queue

Populate a <canvas> element with a font texture atlas

Tiny local JSON database for Node, Electron and the browser

Morph a DOM tree to another DOM tree (no virtual DOM needed)

Chromium Binary for Serverless Platforms

<!-- markdownlint-disable MD024 -->

Cascading grid layout library

AWS X-Ray ID generator for OpenTelemetry

Check if browser is Internet Explorer

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

small function to append a query string to a URL

A companion library to openai for Azure OpenAI.

Extend Chai Assertion library with tests for http apis

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

Advanced HTTP requests in node.js and browsers

Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)

browserify compatible version of the ace editor.