Lightweight Proxy-free React state management. Direct mutations, tracked array methods, built-in undo/redo time travel, cross-tab sync, atomic transactions, and localStorage persistence. Zero dependencies, ~2KB, TypeScript-first.

Cross-tab communication made simple

Durable pending-transaction registry: cross-tab ownership, reconciliation, and failure recovery, with no React in the graph

Collabs cross-tab synchronization using BroadcastChannel

Type-safe, bidirectional synchronization between Angular signals and localStorage/sessionStorage, with cross-tab sync.

A content-agnostic drag-and-drop dashboard library for Angular 15. Multi-workspace, persistent layout, pop-out windows, live cross-tab sync.

This is a simple library for sending data between browser tabs. It uses storage events for same domain use, and adds in postMessage with an iframe for cross domain messaging. There is also a [redux middleware](https://github.com/stutrek/cross-tab-middlewa

Eidos — offline-first abstraction layer. resource() + action() auto-generate Service Workers, cache strategies, and an IndexedDB action queue with idempotency keys and cross-tab replay locks.

One state, many windows, always in sync — shared reactive state for Electron multi-window apps and cross-tab web apps, with built-in persistence and versioned migration.

Node's fs in the browser, including a real synchronous readFileSync/writeFileSync, stored in OPFS. Handles the workers, cross-tab locking and encodings for you.

Add cross tab syncing to your [redux](https://github.com/gaearon/redux) app with 1 line. This tiny module listens to the window for [redux-persist](https://github.com/rt2zz/redux-persist) storage events. When an event occurs it will dispatch a rehydrate a

A form storage solution with cross-tab synchronization

Lightweight TypeScript library for automatic JWT token refresh with cross-tab synchronization

Angular session management library with timeout handling, activity tracking, multi-session conflict detection, cross-tab synchronization, network status handling, session lock/unlock, and UI components

Secure, encrypted cross-tab communication in the browser

Lightweight, type-safe cross-tab communication using BroadcastChannel with automatic localStorage fallback

Cross platform child_process#spawn and child_process#spawnSync

kevy in the browser — a Redis-compatible engine compiled to WebAssembly: KV, TTL, pub/sub, and the rest of the data layer (secondary indexes, full-text and vector search, materialised views, tables), with OPFS/IndexedDB persistence and cross-tab pub/sub.

A tiny, type-safe localStorage observer with cross-tab synchronization.

A TypeScript API client built on fetch, focused on browser auth: coalesced token refresh, Web Worker token isolation and cross-tab session sync. Zero dependencies.