JSPM

Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js

The editing engine of CKEditor 5 – the best browser-based rich text editor.

The core architecture of CKEditor 5 – the best browser-based rich text editor.

A set of ready-to-use rich text editors created with a powerful framework. Made with real-time collaborative editing in mind.

3-dimensional physics engine in Rust - official JS bindings. Compatibility package with inlined webassembly as base64.

Publish & Subscribe Real-time Messaging with PubNub

[](https://www.npmjs.com/package/@n1ru4l/graphql-live-query) [](https://www.npmjs.com/package/@n1ru4l/

JavaScript client SDK for bidirectional communication with Centrifugo and Centrifuge-based server from browser, NodeJS and React Native

Build real-time applications powered by [Durable Objects](https://developers.cloudflare.com/durable-objects/), inspired by [PartyKit](https://www.partykit.io/).

A set of React hooks and providers to use Liveblocks declaratively. Liveblocks is the all-in-one toolkit to build collaborative products like Figma, Notion, and more.

A client that lets you interact with Liveblocks servers. Liveblocks is the all-in-one toolkit to build collaborative products like Figma, Notion, and more.

Base utilities used by CKEditor 5 collaboration features to support multiple users working together in a rich text editor.

Collaborative comments feature for CKEditor 5.

A set of CKEditor 5 features enabling real-time collaboration within the editor using CKEditor Cloud Services.

A server-side utility that lets you set up a Liveblocks authentication endpoint. Liveblocks is the all-in-one toolkit to build collaborative products like Figma, Notion, and more.

Base utilities used by CKEditor 5 collaboration features to support multiple users working together in a rich text editor.

CKEditor 5 operations compressor for real-time collaboration.

CKEditor Cloud Services Collaboration low-level API is required by CKEditor 5 Collaboration features to enable real-time collaborative editing in CKEditor 5.

CKEditor 5 track changes plugin.

A cryptocurrency trading API with more than 100 exchanges in JavaScript / TypeScript / Python / C# / PHP / Go

Sendbird UIKit for React: A feature-rich and customizable chat UI kit with messaging, channel management, and user authentication.

A set of React pre-built components for the Liveblocks products. Liveblocks is the all-in-one toolkit to build collaborative products like Figma, Notion, and more.

Streams.

The HTML5 Server-Sent events specification is introduced "to enable servers to push data to Web pages over HTTP or using dedicated server-push protocols".

Dead simple, dependency-less, spec-compliant server-sent events implementation written in TypeScript.

Integrate your existing or new Yjs documents with Liveblocks.

Publish & Subscribe Real-time Messaging with PubNub

PartyKit simplifies developing multiplayer applications. Everything's better with friends.

Add real-time speech to text functionality into your website with no effort

Primus is a simple abstraction around real-time frameworks. It allows you to easily switch between different frameworks without any code changes.

2-dimensional physics engine in Rust - official JS bindings. Compatibility package with inlined webassembly as base64.

Shared logic for building live query patch implementations.

[](https://www.npmjs.com/package/@n1ru4l/in-memory-live-query-store) [](https://www.np

Backendless RT Client for connect to Backendless RT Server

Client for the Speechmatics real-time API

A Vue plugin that makes integrating ActionCable easy.

Velt is an SDK to add collaborative features to your product within minutes. Example: Comments like Figma, Frame.io, Google docs or sheets, Recording like Loom, Huddles like Slack and much more.

A Storybook add-on for live editing stories. Supports React and TypeScript.

A middleware for Zustand to automatically synchronize your stores with Liveblocks. Liveblocks is the all-in-one toolkit to build collaborative products like Figma, Notion, and more.

Sendbird UIKit for React Native: A feature-rich and customizable chat UI kit with messaging, channel management, and user authentication.

Display dynamic real-time information about running Node.js process

Library for fetching temporary keys for Speechmatics APIs

A Server-Sent-Event module bringing real-time capabilities to AdonisJS.

[![github actions][actions-image]][actions-url] [![coverage][codecov-image]][codecov-url] [![dependency status][deps-svg]][deps-url] [![dev dependency status][dev-deps-svg]][dev-deps-url] [![License][license-image]][license-url] [![Downloads][downloads-im

Velt is an SDK to add collaborative features to your product within minutes. Example: Comments like Figma, Frame.io, Google docs or sheets, Recording like Loom, Huddles like Slack and much more.

A server-side utility that lets you modify prosemirror and tiptap documents hosted in Liveblocks.

JSON-RPC 2.0 client/server/peer for any reliable transport. Inter-process communication. REST. WebSocket. WebWorker. Out of order messaging or in-order byte streams

This package includes the resources needed to write a Lightstreamer client.

A set of React hooks for integrating Sendbird chat functionality into your React app.

Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js

A framework agnostic Server-Sent-Event library

A set of functions and utilities to make sending emails based on Liveblocks notification events easy. Liveblocks is the all-in-one toolkit to build collaborative products like Figma, Notion, and more.

Server-Sent Events "channel" where all messages are broadcasted to all connected clients, history is maintained automatically and server attempts to keep clients alive by sending "keep-alive" packets automatically.

An integration of TipTap + React to enable collaboration, comments, live cursors, and more with Liveblocks.

Hazelcast - a real-time stream processing platform - Node.js Client

Real-time audio processing for voice, in web browsers

This package includes the resources needed to write a Lightstreamer client.

React components for [Stripe.js and Elements](https://stripe.com/docs/stripe-js).

[![github actions][actions-image]][actions-url] [![coverage][codecov-image]][codecov-url] [![dependency status][deps-svg]][deps-url] [![dev dependency status][dev-deps-svg]][dev-deps-url] [![License][license-image]][license-url] [![Downloads][downloads-im

Production-ready Centrifugo WebSocket client for React with real-time subscriptions, RPC patterns, and connection state management

Velt is an SDK to add collaborative features to your product within minutes. Example: Comments like Figma, Frame.io, Google docs or sheets, Recording like Loom, Huddles like Slack and much more.

Server-Sent Events plugin for Fastify

3-dimensional physics engine in Rust - official JS bindings.

An integration of Lexical + React to enable collaboration, comments, live cursors, and more with Liveblocks.

React hooks for interacting with the Speechmatics Real-Time API

This package includes the resources needed to write a Lightstreamer client.

Tiptap Extension to add Google Docs-style overlay comments to your Tiptap editor. Works with the Velt Collaboration SDK.

Supersonic reverse matching engine

Comprehensive Voice Agent SDK with Customizable Widget - Real-time audio, WebSocket communication, React components, and extensive customization options

PostgreSQL-powered framework with zero boilerplate CRUD operations and real-time WebSocket synchronization

An integration of BlockNote + React to enable collaboration, comments, live cursors, and more with Liveblocks.

AI-powered Storybook story generator with dynamic component discovery

Slate Extension to add Google Docs-style overlay comments to your Slate editor. Works with the Velt Collaboration SDK.

<h3 align="center"> @merger203/expert-invention </h3>

This Node package for Azure Relay Hybrid Connections is built on and extends the ['ws'](https://www.npmjs.com/package/ws) NPM package. This package re-exports all exports of that base package and adds new exports that enable integration with the Azu

Odyssey Spatial Audio & Video SDK using MediaSoup for real-time communication

[](https://www.npmjs.com/package/@n1ru4l/graphql-live-query-patch-jsondiffpatch) [![npm downloads](https://img.shields.io/npm/dm/@n1ru4l/graphql-live-query-patc

A multiplayer sword fighting game engine with character management, round-based combat, and real-time multiplayer support

Type-safe, real-time API framework - GraphQL concepts in TypeScript with zero codegen

HarperDB is a distributed database, caching service, streaming broker, and application development platform focused on performance and ease of use.

CKEditor 5 build for Strapi WYSIWYG editor replacement

Client for the coinbase-pro API

Replace Strapi default WYSIWYG editor with enhanced build of CKEditor 5

2-dimensional physics engine in Rust - official JS bindings. Compatibility package with inlined webassembly as base64.

React hooks for building AI chat interfaces with AgentKit

A node library to control your sonos devices, written in typescript

MCP server for bidirectional AI agent communication via ntfy.sh push notifications. Send messages, receive real-time responses, and chat with AI agents through a shared topic. Perfect for async workflows, notifications, and agent-to-agent communication. N

wrapper built upon ws module that provides standard server api only.

Server-Sent Events (SSE) support for Fetcher HTTP client with native LLM streaming API support. Enables real-time data streaming and token-by-token LLM response handling.

2-dimensional physics engine in Rust - official JS bindings.

A framework-agnostic library for integrating Monaco Editor with Shiki highlighting, optimized for streaming updates.

UTSP Network Client - Client-side communication adapters

MigratoryData Client API for JavaScript/Node.js

Real-time web framework

Free AI SDK with API key (500 free daily requests). Access 25+ LLM models (GPT-4, Gemini, Llama, DeepSeek), generate images with 14+ models (Flux, Stable Diffusion), and integrate Akinator game - all completely free.

[](https://www.npmjs.com/package/@n1ru4l/socket-io-graphql-server) [](https://www.npmjs.co

Velt is an SDK to add collaborative features to your product within minutes. Example: Comments like Figma, Frame.io, Google docs or sheets, Recording like Loom, Huddles like Slack and much more.

UTSP Network Server - Server-side communication adapters

A complete WebRTC calling solution for React Native with UI components, Context API integration, and signaling support

Professional financial charting library with real-time data, canvas primitives, and smooth transitions

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

Real-time data synchronization server with LokiJS and Socket.IO. Self-hosted, offline-first sync for Node.js applications.

Blazing-fast mathematical expression evaluator for Node-RED. Native C++ addon using muParser library - 18M+ evaluations/sec. Features: batch processing, custom output locations, dual outputs for error handling, flexible variable sources, and comprehensive

Audio input capture plugin for Cordova and Capacitor - real-time microphone access with streaming and file recording support

A cryptocurrency trading API with more than 100 exchanges in JavaScript / TypeScript / Python / C# / PHP / Go

Browser-based real-time speech recognition using sherpa-onnx WebAssembly

A store enhancer to integrate Liveblocks into Redux stores. Liveblocks is the all-in-one toolkit to build collaborative products like Figma, Notion, and more.

Native Node.js addon for capturing per-application audio on macOS using ScreenCaptureKit framework. Real-time audio streaming with event-based API.

Patterns and utilities for handling registration of metadata and functionality for run-time use

The Goldsky CLI to deploy subgraphs, index & transform blockchain data, configure webhooks, and access your data in real-time.

An installer for Liveblocks projects, including various examples and a Next.js starter kit. Liveblocks is the all-in-one toolkit to build collaborative products like Figma, Notion, and more.

React hooks and components for XHub Chat

Minimalist framework to collect and handle data in a Digital Twin project

Eloquent-style ORM for Firebase Firestore with TypeScript

Core functionality for XHub Chat - Framework agnostic chat utilities

Convai Web SDK for AI voice assistants. Supports both React and vanilla JavaScript/TypeScript. Build voice-powered AI interactions with real-time audio/video streaming.

Sendbird Calls SDK for React Native: Empower React Native apps with seamless audio, video, and group calling. Build interactive communication easily.

Custom CKEditor5 component build for Wiki.js

Temasys Web SDK is an open-source client-side library for your web-browser that enables any website to easily leverage the capabilities of WebRTC and its direct data streaming powers between peers for audio/video conferencing or file transfer.

A server-side utility that lets you modify lexical documents hosted in Liveblocks.

A Vue library for integrating Monaco Editor with Shiki syntax highlighting, supporting real-time updates.

The customize full features for classic editor build of CKEditor 5 – the best browser-based rich text editor. Thanks for CKEditor.

Generic blockchain event indexer for EVM-compatible smart contracts with real-time processing and gap detection

Real-time metric graphs in the terminal

High-performance DSP library with native C++ acceleration and Redis state persistence

A custom CKEditor 5 build made by the CKEditor 5 online builder and adapted to be used inside Renku UI.

Real-time client/server communication over UDP using WebRTC and Node.js

Odyssey Official Audio & Video SDK using MediaSoup for real-time communication

A JavaScript / TypeScript / Python / C# / PHP cryptocurrency trading library with support for 130+ exchanges

Smart Audio Recording - Core engine, pipeline, and event system

Sendbird UIKit for React Native: A feature-rich and customizable chat UI kit with messaging, channel management, and user authentication.

Real-time model intelligence for your AI assistant.

Webcom library

n8n node for PubNub real-time messaging platform

High-performance TypeScript library for type-safe data validation and client-server communication with bidirectional RPC, streaming support, and multiple transport options

FunhiChart - Professional real-time trading chart component powered by TradingView's Lightweight Charts with WebSocket support

Centralized, runtime-agnostic library for real-time collaboration and synchronization

The classic editor build of CKEditor 5 – the best browser-based rich text editor.

Live Timeline MCP Server - 实时时间线MCP服务器，为AI Agent提供项目演化轨迹查询能力

Low-level utilities for SARAudio (DSP, ring buffers, PCM converters)

Custom (Add extra plugins). The classic editor build of CKEditor 5 – the best browser-based rich text editor.

Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js

Real-time messaging framework

Server-sent event driver for Laravel Echo and broadcasting system.

A WebSocket server for Minecraft Bedrock Edition, offering fully typed event handling, real-time player and game interactions, and seamless integration for JavaScript projects.

Real-time streaming AI consensus platform with HTTP+SSE MCP integration for Claude Code, VS Code, Cursor, and Windsurf - powered by OpenRouter's unified API

Sendbird UIKit for React: A feature-rich and customizable chat UI kit with messaging, channel management, and user authentication.

Production-ready floating AI chatbot with voice capabilities and Mofid API integration

Dependency registration/management and injection support.

Tajriba client

React audio visualization component

The zkteco library allows Node.js developers to easily interface with ZK BioMetric Fingerprint Attendance Devices, extract and manage data, and integrate biometric features into attendance systems efficiently.

CKEditor 5 Classic Plus is a custom build built on top of CKEditor 5 Build - Classic (version: 41.3.0). It adds Simple Upload Adapter, Image Resize, Font Styling and much more to the official build.

Publish & Subscribe Real-time Messaging with PubNub

Tiptap CRDT library for Velt

CLI tool for the Crablr platform that enables real-time payment monitoring and webhook forwarding for merchants and developers.

High-quality audio recording Capacitor plugin with native iOS & Android support. Features pause/resume, microphone management, real-time monitoring, audio trimming, and comprehensive mobile audio recording capabilities.

The document editor build of CKEditor 5 – the best browser-based rich text editor.

Your friendly TypeScript companion for Washington State transportation APIs - WSDOT and WSF data with smart caching and React Query integration

A set of React hooks for integrating Sendbird chat functionality into your React app.

🎙️ A lightweight React hook for audio recording using native Web APIs (MediaRecorder, getUserMedia). Start, stop, pause, resume audio recordings with customizable callbacks. Perfect for voice notes, interviews, podcasts, and real-time audio processing in

SQL backing for the travetto model module, with real-time modeling support for SQL schemas.

A real-time messaging application with direct & broadcast messages, user lists, and optional MongoDB persistence.

YJS network provider for ElectricSQL

sec.gov EDGAR API Wrapper

Framework-agnostic core for ThreadKit commenting system

Emergent intelligence through temporal consciousness - thousands of nano-agents collaborating in real-time with 500K+ ops/sec

Tiptap CRDT library for Velt

The document editor build of CKEditor 5 – the best browser-based rich text editor.

Vue 3 Composition API bindings for SARAUDIO pipeline

Telegram MTPROTO API integration for n8n - Real-time new message listening and automation

React hook for Azure/fetch-event-source. For making Event Source requests, with all the features of fetch()

A high-performance spectrum analyzer library for RF signal processing, supporting real-time spectrum analysis, waterfall display, and multi-segment frequency scanning

Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js

Streamoji React SDK

Real-time PCM audio recorder for React Native with streaming and file persistence

A cross-runtime file watcher with glob pattern support for Node.js, Deno, and Bun.

Local-first sync engine for SvelteKit

Javascript SDK for integrating with Flamelink CMS

Real-time audio level metering for SARAudio

An offline-first collaborative library with authoritative server for real-time data synchronization

Svelte 5 bindings for SARAUDIO pipeline

This is a set of fully customizable Angular components for visualizing data.

Energy-based Voice Activity Detection for SARAudio

Bun platform adapter for WS-Kit leveraging native WebSocket API with built-in pub/sub and low-latency message routing

The official TypeScript library for the Sports Game Odds API

SolidJS bindings for SARAUDIO pipeline

React bindings for SARAUDIO pipeline

Empirica Core

iosignal

Market data providers for Neural Trader - Alpaca, Polygon, Yahoo Finance

A TypeScript library providing 80+ technical indicators for trading, designed for incremental, stateful calculation perfect for intraday and realtime trading applications

Primus is a simple abstraction around real-time frameworks. It allows you to easily switch between different frameworks without any code changes.

The classic editor build of CKEditor 5 – the best browser-based rich text editor. This specific build includes more plugins. See the README document for more information.

Real-time client/server communication over UDP using WebRTC and Node.js

The classic editor build of CKEditor 5 + Mathtype – the best browser-based rich text editor.

Telegram MTPROTO API integration for n8n - Real-time new message listening and automation

React Native library for background location tracking using TurboModules. Track user location even when the app is minimized or in the background.

2-dimensional physics engine in Rust - official JS bindings.

CKEditor 5 with simple upload adapter and image resize.

A React package for integrating Convai's AI-powered voice assistants with LiveKit for real-time audio/video conversations

React hook for Cheetah Web SDK

2-dimensional physics engine in Rust - official JS bindings. Compatibility package with inlined webassembly as base64.

Plug-and-play Polymarket WebSocket price alerts

The classic editor build of CKEditor 5 – the best browser-based rich text editor.

Headless, UI-agnostic Chat SDK for real-time messaging

A production-ready WebSocket and WebRTC virtual classroom system for real-time online education with video streaming, chat, and lecture management

A comprehensive Svelte 5 component library with 187+ components focused on accessibility, ADHD-optimized design, and full SSR compatibility. Features specialized bundles for agent/AI interfaces, knowledge management, therapeutic tools, and advanced data v

Extended verison of the classic editor build of CKEditor 5

Real-time sports odds tracking service

Universal Voice Activity Detection SDK for WebAssembly - supports multiple VAD engines with a unified API

Prebuilt client library for Primus - a simple abstraction around real-time frameworks

VitalWall client library for vanilla JavaScript applications

Patch React Library

Collaboration and real-time teamwork components for whiteboards, co-editing, and shared workspaces

Universal WebSocket client for WS-Kit with type-safe message validation for browser and Node.js

WebSocket wrapper for Svelte 5 using runes.

The lightweight classic editor build of CKEditor 5 with Base64 image upload adapter.

🎯 TRUE Drop-in ioredis replacement with comprehensive compatibility. Powered by Valkey GLIDE's high-performance Rust core. Complete Valkey JSON/Search module support. Zero code changes required for most production use cases.

Metroplex is capable of transforming into a battle station, giant robot or a distributed connect client directory for Primus.

FlagOff - A comprehensive dual-purpose JavaScript SDK for feature flags with client-side and server-side support

A collaborative whiteboard React component with real-time synchronization

Chat client features for Paanj platform - real-time messaging and conversations

Real-time financial data streaming SDK for WioEX API with enterprise-grade reliability

Web SDK for integrating real-time room management and streaming functionality into web applications

GenosDB (GDB): distributed graph database in real-time, peer-to-peer, scalable storage - efficient querying of complex relationships.

A real-time, lightweight server designed to enable multiplayer experiences for games built with the Inglorious Engine.

一个完整的日志管理系统，包含服务器、实时可视化界面和客户端库

Multiuser for Static Web Apps by Running Server Code in Synced Client VMs

With StickyHorse allow your users to send feedback to your team.

Revolutionizing real-time file transfer with seamless, instant communication across any device. Deliver files instantly, regardless of platform, and experience unparalleled speed and control in managing transfers. Elevate your file-sharing capabilities wi

A comprehensive collaborative editor SDK with real-time collaboration features. Drop it into any Vue application and get a full-featured editor with Notion-like experience.

A lightweight Server-Sent Events (SSE) library for Next.js, enabling real-time, unidirectional data streaming from server to client

SignalR client library built on top of @microsoft/signalr. This gives you more features and easier to use.

This is the client js sdk for cutting-edge Samvyo real-time voice/video cloud.

Unleash the future of data management with the ultimate platform for secure, scalable, and dynamic data operations. Power the next generation of applications by combining advanced encryption, revolutionary real-time querying, and seamless synchronization

MCP server for collaborative filesystem - enables AI agents to collaborate in real-time with zero-config join codes

Open-source creative coding framework for distributed applications based on Web technologies

A lightweight JSON-RPC 2.0 client implementation over WebSocket, supporting request-response, notifications, and batch processing

Chat admin features for Paanj platform - manage users, conversations, and messages

Production-ready AI Assistant Server with advanced RAG (chunk-based semantic search + adjacent retrieval), conversation management, real-time communication, and human agent handoff

Create a stream of Sequelize create, update, and destroy events.

CRDT library for Velt

React Native MediaPipe Pose Detection with GPU acceleration, jump detection, and high-performance analysis

React hooks for Velt CRDT library

Official TypeScript/Node.js SDK for CEB (Crypto Exchange Bot) - Unified API for multi-exchange trading, market data, and arbitrage

A lightweight framework for bi-directional database synchronization with automatic version tracking and conflict resolution.

Cloudflare Durable Objects adapter for WS-Kit enabling stateful, globally-distributed WebSocket applications at the edge

CodeMirror CRDT library for Velt

Seamless, real-time file transfers between devices with effortless connectivity. A powerful command-line tool built for instant, secure, and cross-platform file sharing, enabling efficient and reliable data transfers in any network environment.