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ShareJS is a collaborative document database and synchronization engine designed for real-time shared state management. It provides an operational transform sync engine to enable simultaneous editing of plain-text and JSON data, and a RESTful synchronization API for managing document states via HTTP.
The main features of josephg/sharejs are: Operational Transformation Engines, Operational Transformation, Client-Server State Synchronization, Live Query Engines, Document Databases, Event-Driven Subscription Systems, Client-Side Buffers, Offline-First Persistence.
Projects with overlapping indexed features include: derbyjs/derby — Derby is an isomorphic MVC framework and real-time data synchronization engine designed for building collaborative… loro-dev/loro — Loro is a conflict-free replicated data type (CRDT) framework and collaborative state engine designed for building… vlcn-io/cr-sqlite — cr-sqlite is a multi-master database replication system that uses conflict-free replicated data types to ensure… firebaseextended/firepad — Firepad is a Firebase collaborative text editor and rich text editor component. It functions as a real-time… rethinkdb/rethinkdb — RethinkDB is a distributed, document-oriented database designed to store and manage JSON-formatted data across… collaboraonline/online — This project is a cloud-based office suite and self-hosted document server that enables the creation and editing of…
Derby is an isomorphic MVC framework and real-time data synchronization engine designed for building collaborative applications. It functions as a bi-directional data binding library and template engine that shares a single codebase between Node.js and the browser to synchronize state across clients and servers. The framework distinguishes itself through the use of operational transformation to resolve data conflicts automatically, enabling real-time shared editing and multi-user collaboration. It employs a differential state mutation model to minimize updates by performing deep equality chec
Loro is a conflict-free replicated data type (CRDT) framework and collaborative state engine designed for building real-time collaborative applications. It provides a distributed data synchronizer that enables multiple users to edit shared documents and complex nested structures—such as maps, lists, trees, and counters—with automatic state convergence without requiring a central server. The project distinguishes itself through a versioned document store that supports branching, forking, and merging via a directed acyclic graph of causal operation history. It enables advanced version control c
cr-sqlite is a multi-master database replication system that uses conflict-free replicated data types to ensure eventual consistency across distributed nodes. It provides the core capabilities for offline-first data synchronization, allowing multiple database instances to merge concurrent updates and reach a consistent state. The project distinguishes itself through a combination of CRDT-based data replication and a WASM-based database engine, enabling full SQL execution and state persistence within web browsers. It supports peer-to-peer replication and cross-tab synchronization, utilizing ca
Firepad is a Firebase collaborative text editor and rich text editor component. It functions as a real-time collaborative framework and operational transformation engine designed to synchronize document editing across multiple concurrent users. The project provides tools for shared document synchronization and collaborative presence tracking, allowing users to see live cursor positions and identifiers. It supports rich text authoring integration for both formatted content and code editing. The system manages document consistency through shared document synchronization and provides capabiliti