
Everything local-first and multiplayer
PartyKit provides programmable edge servers for real-time applications. Deploy WebSocket servers that run close to users with simple deployment.

Add collaboration to your product
Liveblocks provides infrastructure for building collaborative experiences. Real-time sync, presence, comments, and notifications—everything for multiplayer apps.

Simple, scalable realtime infrastructure
Pusher provides hosted WebSocket infrastructure for real-time features. Channels, presence, and pub/sub without managing WebSocket servers.

Shared data types for building collaborative software
Y.js provides CRDTs (Conflict-free Replicated Data Types) for building real-time collaborative applications. The foundation for conflict-free sync.

Bidirectional and low-latency communication
Socket.io enables real-time, bidirectional communication between clients and servers. The library that made WebSockets accessible to millions of developers.

Realtime experience infrastructure
Ably provides enterprise-grade real-time messaging with guaranteed delivery and global edge infrastructure. Build real-time features that scale.